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38868380 = 2251943419
BaseRepresentation
bin1001010001000…
…1010110011100
32201010201101122
42110101112130
534422242010
63505030112
7651242615
oct224212634
981121348
1038868380
111aa38431
1211025338
13808b755
14523ac0c
15362b855
hex251159c

38868380 has 12 divisors (see below), whose sum is σ = 81623640. Its totient is φ = 15547344.

The previous prime is 38868371. The next prime is 38868383. The reversal of 38868380 is 8386883.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38868383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971690 + ... + 971729.

It is an arithmetic number, because the mean of its divisors is an integer number (6801970).

Almost surely, 238868380 is an apocalyptic number.

It is an amenable number.

38868380 is an abundant number, since it is smaller than the sum of its proper divisors (42755260).

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

38868380 is a wasteful number, since it uses less digits than its factorization.

38868380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943428 (or 1943426 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 38868380 is about 6234.4510584333. The cubic root of 38868380 is about 338.7392175324.

The spelling of 38868380 in words is "thirty-eight million, eight hundred sixty-eight thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 1943419 3886838 7773676 9717095 19434190 38868380