145399032 has 48 divisors (see below), whose sum is σ = 395043480. Its totient is φ = 48312000.

The previous prime is 145399027. The next prime is 145399043. The reversal of 145399032 is 230993541.

It is a happy number.

145399032 is a `hidden beast` number, since 1 + 4 + 539 + 90 + 32 = 666.

145399032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145399032² = 42281757013074048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 20782 + ... + 26882.

Almost surely, 2^145399032 is an apocalyptic number.

145399032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145399032 is an abundant number, since it is smaller than the sum of its proper divisors (249644448).

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

145399032 is a wasteful number, since it uses less digits than its factorization.

145399032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6444 (or 6437 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 145399032 is about 12058.1520972328. The cubic root of 145399032 is about 525.8402653177.

The spelling of 145399032 in words is "one hundred forty-five million, three hundred ninety-nine thousand, thirty-two".