145672428 has 24 divisors (see below), whose sum is σ = 370802880. Its totient is φ = 44143120.

The previous prime is 145672427. The next prime is 145672447. The reversal of 145672428 is 824276541.

145672428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (145672427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551658 + ... + 551921.

It is an arithmetic number, because the mean of its divisors is an integer number (15450120).

Almost surely, 2^145672428 is an apocalyptic number.

It is an amenable number.

145672428 is an abundant number, since it is smaller than the sum of its proper divisors (225130452).

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

145672428 is a wasteful number, since it uses less digits than its factorization.

145672428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103597 (or 1103595 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 145672428 is about 12069.4833360836. The cubic root of 145672428 is about 526.1696407633.

The spelling of 145672428 in words is "one hundred forty-five million, six hundred seventy-two thousand, four hundred twenty-eight".