2256536240 has 60 divisors (see below), whose sum is σ = 6103020096. Its totient is φ = 773668224.

The previous prime is 2256536237. The next prime is 2256536263. The reversal of 2256536240 is 426356522.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2256536240.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283904 + ... + 291743.

Almost surely, 2^2256536240 is an apocalyptic number.

2256536240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2256536240 is an abundant number, since it is smaller than the sum of its proper divisors (3846483856).

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

2256536240 is a wasteful number, since it uses less digits than its factorization.

2256536240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575674 (or 575661 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 2256536240 is about 47503.0129570746. The cubic root of 2256536240 is about 1311.6383440765.

The spelling of 2256536240 in words is "two billion, two hundred fifty-six million, five hundred thirty-six thousand, two hundred forty".