145920920 has 32 divisors (see below), whose sum is σ = 328741200. Its totient is φ = 58293888.

The previous prime is 145920919. The next prime is 145920961. The reversal of 145920920 is 29029541.

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, 38051 + ... + 41709.

Almost surely, 2^145920920 is an apocalyptic number.

145920920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145920920 is an abundant number, since it is smaller than the sum of its proper divisors (182820280).

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

145920920 is a wasteful number, since it uses less digits than its factorization.

145920920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4667 (or 4663 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 145920920 is about 12079.7731766784. The cubic root of 145920920 is about 526.4686556455.

The spelling of 145920920 in words is "one hundred forty-five million, nine hundred twenty thousand, nine hundred twenty".