245049920 has 28 divisors (see below), whose sum is σ = 583525884. Its totient is φ = 98019840.

The previous prime is 245049919. The next prime is 245049953. The reversal of 245049920 is 29940542.

It can be written as a sum of positive squares in 2 ways, for example, as 125978176 + 119071744 = 11224^2 + 10912^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382571 + ... + 383210.

Almost surely, 2^245049920 is an apocalyptic number.

245049920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245049920 is an abundant number, since it is smaller than the sum of its proper divisors (338475964).

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

245049920 is an equidigital number, since it uses as much as digits as its factorization.

245049920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765798 (or 765788 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 245049920 is about 15654.0703971842. The cubic root of 245049920 is about 625.7749704095.

The spelling of 245049920 in words is "two hundred forty-five million, forty-nine thousand, nine hundred twenty".