240030856 has 16 divisors (see below), whose sum is σ = 484677900. Its totient is φ = 110783424.

The previous prime is 240030841. The next prime is 240030911. The reversal of 240030856 is 658030042.

It can be written as a sum of positive squares in 2 ways, for example, as 238208356 + 1822500 = 15434^2 + 1350^2 .

It is a super-2 number, since 2×240030856² = 115229623664185472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153891 + ... + 1154098.

Almost surely, 2^240030856 is an apocalyptic number.

240030856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

240030856 is an abundant number, since it is smaller than the sum of its proper divisors (244647044).

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

240030856 is a wasteful number, since it uses less digits than its factorization.

240030856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308008 (or 2308004 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 240030856 is about 15492.9292259405. The cubic root of 240030856 is about 621.4731324846.

Adding to 240030856 its reverse (658030042), we get a palindrome (898060898).

The spelling of 240030856 in words is "two hundred forty million, thirty thousand, eight hundred fifty-six".