245737940 has 36 divisors (see below), whose sum is σ = 600305076. Its totient is φ = 84252672.

The previous prime is 245737937. The next prime is 245738011. The reversal of 245737940 is 49737542.

It can be written as a sum of positive squares in 2 ways, for example, as 65480464 + 180257476 = 8092^2 + 13426^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124397 + ... + 126356.

It is an arithmetic number, because the mean of its divisors is an integer number (16675141).

Almost surely, 2^245737940 is an apocalyptic number.

245737940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245737940 is an abundant number, since it is smaller than the sum of its proper divisors (354567136).

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

245737940 is a wasteful number, since it uses less digits than its factorization.

245737940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250776 (or 250767 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 245737940 is about 15676.0307476095. The cubic root of 245737940 is about 626.3600802771.

The spelling of 245737940 in words is "two hundred forty-five million, seven hundred thirty-seven thousand, nine hundred forty".