56769216 has 56 divisors (see below), whose sum is σ = 171663360. Its totient is φ = 16219392.

The previous prime is 56769197. The next prime is 56769217. The reversal of 56769216 is 61296765.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (56769217) 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 7 ways as a sum of consecutive naturals, for example, 19776 + ... + 22463.

Almost surely, 2^56769216 is an apocalyptic number.

56769216 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

56769216 is an abundant number, since it is smaller than the sum of its proper divisors (114894144).

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

56769216 is a wasteful number, since it uses less digits than its factorization.

56769216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42261 (or 42251 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 56769216 is about 7534.5348894275. The cubic root of 56769216 is about 384.3300114442.

The spelling of 56769216 in words is "fifty-six million, seven hundred sixty-nine thousand, two hundred sixteen".