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38865232 = 247289557
BaseRepresentation
bin1001010001000…
…0100101010000
32201010120002001
42110100211100
534422141412
63505003344
7651230500
oct224204520
981116061
1038865232
111aa3602a
1211023554
13808a1a3
145239a00
15362a957
hex2510950

38865232 has 60 divisors (see below), whose sum is σ = 88738740. Its totient is φ = 16439808.

The previous prime is 38865223. The next prime is 38865251. The reversal of 38865232 is 23256883.

It can be written as a sum of positive squares in 2 ways, for example, as 5271616 + 33593616 = 2296^2 + 5796^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38865191 and 38865200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69498 + ... + 70054.

It is an arithmetic number, because the mean of its divisors is an integer number (1478979).

Almost surely, 238865232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38865232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44369370).

38865232 is an abundant number, since it is smaller than the sum of its proper divisors (49873508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38865232 is a wasteful number, since it uses less digits than its factorization.

38865232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 655 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 38865232 is about 6234.1985852233. The cubic root of 38865232 is about 338.7300723108.

It can be divided in two parts, 38 and 865232, that added together give a triangular number (865270 = T1315).

The spelling of 38865232 in words is "thirty-eight million, eight hundred sixty-five thousand, two hundred thirty-two".

Divisors: 1 2 4 7 8 14 16 28 49 56 89 98 112 178 196 356 392 557 623 712 784 1114 1246 1424 2228 2492 3899 4361 4456 4984 7798 8722 8912 9968 15596 17444 27293 31192 34888 49573 54586 62384 69776 99146 109172 198292 218344 347011 396584 436688 694022 793168 1388044 2429077 2776088 4858154 5552176 9716308 19432616 38865232