240009928 has 8 divisors (see below), whose sum is σ = 450018630. Its totient is φ = 120004960.

The previous prime is 240009907. The next prime is 240009943. The reversal of 240009928 is 829900042.

It can be written as a sum of positive squares in only one way, i.e., 224940004 + 15069924 = 14998^2 + 3882^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 240009893 and 240009902.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15000613 + ... + 15000628.

Almost surely, 2^240009928 is an apocalyptic number.

It is an amenable number.

240009928 is a deficient number, since it is larger than the sum of its proper divisors (210008702).

240009928 is a wasteful number, since it uses less digits than its factorization.

240009928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30001247 (or 30001243 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 240009928 is about 15492.2538063382. The cubic root of 240009928 is about 621.4550701294.

The spelling of 240009928 in words is "two hundred forty million, nine thousand, nine hundred twenty-eight".