56197128 has 64 divisors (see below), whose sum is σ = 156542400. Its totient is φ = 16692480.

The previous prime is 56197091. The next prime is 56197129. The reversal of 56197128 is 82179165.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (56197129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5943 + ... + 12153.

It is an arithmetic number, because the mean of its divisors is an integer number (2445975).

Almost surely, 2^56197128 is an apocalyptic number.

56197128 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56197128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78271200).

56197128 is an abundant number, since it is smaller than the sum of its proper divisors (100345272).

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

56197128 is a wasteful number, since it uses less digits than its factorization.

56197128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6262 (or 6258 counting only the distinct ones).

The product of its digits is 30240, while the sum is 39.

The square root of 56197128 is about 7496.4743713295. The cubic root of 56197128 is about 383.0346302313.

The spelling of 56197128 in words is "fifty-six million, one hundred ninety-seven thousand, one hundred twenty-eight".