56178738 has 128 divisors (see below), whose sum is σ = 158976000. Its totient is φ = 14281920.

The previous prime is 56178737. The next prime is 56178739. The reversal of 56178738 is 83787165.

56178738 is a `hidden beast` number, since 561 + 7 + 87 + 3 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (56178737) and next prime (56178739).

It is a Curzon number.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 56178693 and 56178702.

It is not an unprimeable number, because it can be changed into a prime (56178737) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 245208 + ... + 245436.

It is an arithmetic number, because the mean of its divisors is an integer number (1242000).

Almost surely, 2^56178738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56178738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79488000).

56178738 is an abundant number, since it is smaller than the sum of its proper divisors (102797262).

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

56178738 is a wasteful number, since it uses less digits than its factorization.

56178738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 311 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 56178738 is about 7495.2476943727. The cubic root of 56178738 is about 382.9928441377.

The spelling of 56178738 in words is "fifty-six million, one hundred seventy-eight thousand, seven hundred thirty-eight".