145224872 has 16 divisors (see below), whose sum is σ = 293242740. Its totient is φ = 67026816.

The previous prime is 145224869. The next prime is 145224883. The reversal of 145224872 is 278422541.

145224872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 107205316 + 38019556 = 10354^2 + 6166^2 .

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, 698093 + ... + 698300.

Almost surely, 2^145224872 is an apocalyptic number.

It is an amenable number.

145224872 is an abundant number, since it is smaller than the sum of its proper divisors (148017868).

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

145224872 is a wasteful number, since it uses less digits than its factorization.

145224872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396412 (or 1396408 counting only the distinct ones).

The product of its digits is 35840, while the sum is 35.

The square root of 145224872 is about 12050.9282630012. The cubic root of 145224872 is about 525.6302296916.

The spelling of 145224872 in words is "one hundred forty-five million, two hundred twenty-four thousand, eight hundred seventy-two".