Search a number
-
+
38979152 = 243189883
BaseRepresentation
bin1001010010110…
…0011001010000
32201100100100022
42110230121100
534434313102
63511243012
7652213562
oct224543120
981310308
1038979152
1120003683
1211079468
1380c9cb4
145269332
15364e5a2
hex252c650

38979152 has 40 divisors (see below), whose sum is σ = 78923520. Its totient is φ = 18627840.

The previous prime is 38979139. The next prime is 38979169. The reversal of 38979152 is 25197983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43703 + ... + 44585.

It is an arithmetic number, because the mean of its divisors is an integer number (1973088).

Almost surely, 238979152 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 38979152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39461760).

38979152 is an abundant number, since it is smaller than the sum of its proper divisors (39944368).

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

38979152 is a wasteful number, since it uses less digits than its factorization.

38979152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011 (or 1005 counting only the distinct ones).

The product of its digits is 136080, while the sum is 44.

The square root of 38979152 is about 6243.3285993931. The cubic root of 38979152 is about 339.0607062007.

The spelling of 38979152 in words is "thirty-eight million, nine hundred seventy-nine thousand, one hundred fifty-two".

Divisors: 1 2 4 8 16 31 62 89 124 178 248 356 496 712 883 1424 1766 2759 3532 5518 7064 11036 14128 22072 27373 44144 54746 78587 109492 157174 218984 314348 437968 628696 1257392 2436197 4872394 9744788 19489576 38979152