245073820 has 24 divisors (see below), whose sum is σ = 518417424. Its totient is φ = 97312896.

The previous prime is 245073797. The next prime is 245073833. The reversal of 245073820 is 28370542.

It is a super-2 number, since 2×245073820² = 120122354498784800, which contains 22 as substring.

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, 41982 + ... + 47461.

It is an arithmetic number, because the mean of its divisors is an integer number (21600726).

Almost surely, 2^245073820 is an apocalyptic number.

245073820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245073820 is an abundant number, since it is smaller than the sum of its proper divisors (273343604).

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

245073820 is a wasteful number, since it uses less digits than its factorization.

245073820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89589 (or 89587 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 245073820 is about 15654.8337582997. The cubic root of 245073820 is about 625.7953139319.

The spelling of 245073820 in words is "two hundred forty-five million, seventy-three thousand, eight hundred twenty".