245406240 has 96 divisors (see below), whose sum is σ = 858936960. Its totient is φ = 65440512.

The previous prime is 245406221. The next prime is 245406253. The reversal of 245406240 is 42604542.

245406240 is a `hidden beast` number, since 24 + 540 + 62 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24084 + ... + 32723.

It is an arithmetic number, because the mean of its divisors is an integer number (8947260).

Almost surely, 2^245406240 is an apocalyptic number.

245406240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245406240 is an abundant number, since it is smaller than the sum of its proper divisors (613530720).

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

245406240 is a wasteful number, since it uses less digits than its factorization.

245406240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56831 (or 56817 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 245406240 is about 15665.4473284359. The cubic root of 245406240 is about 626.0781306123.

The spelling of 245406240 in words is "two hundred forty-five million, four hundred six thousand, two hundred forty".