245894940 has 60 divisors (see below), whose sum is σ = 771386616. Its totient is φ = 65571552.

The previous prime is 245894927. The next prime is 245894963. The reversal of 245894940 is 49498542.

245894940 is a `hidden beast` number, since 24 + 589 + 4 + 9 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 74274 + ... + 77513.

Almost surely, 2^245894940 is an apocalyptic number.

245894940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245894940 is an abundant number, since it is smaller than the sum of its proper divisors (525491676).

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

245894940 is a wasteful number, since it uses less digits than its factorization.

245894940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151808 (or 151797 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 245894940 is about 15681.0375932207. The cubic root of 245894940 is about 626.4934440242.

The spelling of 245894940 in words is "two hundred forty-five million, eight hundred ninety-four thousand, nine hundred forty".