245065840 has 40 divisors (see below), whose sum is σ = 575329248. Its totient is φ = 97071360.

The previous prime is 245065817. The next prime is 245065859. The reversal of 245065840 is 48560542.

245065840 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 245065796 and 245065805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6631 + ... + 23110.

Almost surely, 2^245065840 is an apocalyptic number.

245065840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245065840 is an abundant number, since it is smaller than the sum of its proper divisors (330263408).

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

245065840 is a wasteful number, since it uses less digits than its factorization.

245065840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29857 (or 29851 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 245065840 is about 15654.5788828700. The cubic root of 245065840 is about 625.7885215556.

The spelling of 245065840 in words is "two hundred forty-five million, sixty-five thousand, eight hundred forty".