56128236 has 24 divisors (see below), whose sum is σ = 132625920. Its totient is φ = 18472272.

The previous prime is 56128231. The next prime is 56128243. The reversal of 56128236 is 63282165.

56128236 = T₄₃₁ + T₄₃₂ + ... + T₇₄₆.

It is a junction number, because it is equal to n+sod(n) for n = 56128197 and 56128206.

It is not an unprimeable number, because it can be changed into a prime (56128231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28656 + ... + 30551.

It is an arithmetic number, because the mean of its divisors is an integer number (5526080).

Almost surely, 2^56128236 is an apocalyptic number.

It is an amenable number.

56128236 is an abundant number, since it is smaller than the sum of its proper divisors (76497684).

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

56128236 is a wasteful number, since it uses less digits than its factorization.

56128236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59293 (or 59291 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 56128236 is about 7491.8780022101. The cubic root of 56128236 is about 382.8780456451.

The spelling of 56128236 in words is "fifty-six million, one hundred twenty-eight thousand, two hundred thirty-six".