145620272 has 20 divisors (see below), whose sum is σ = 322445136. Its totient is φ = 62408640.

The previous prime is 145620269. The next prime is 145620301. The reversal of 145620272 is 272026541.

It is a happy number.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

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, 649979 + ... + 650202.

Almost surely, 2^145620272 is an apocalyptic number.

It is an amenable number.

145620272 is an abundant number, since it is smaller than the sum of its proper divisors (176824864).

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

145620272 is a wasteful number, since it uses less digits than its factorization.

145620272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300196 (or 1300190 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 145620272 is about 12067.3224867822. The cubic root of 145620272 is about 526.1068373442.

The spelling of 145620272 in words is "one hundred forty-five million, six hundred twenty thousand, two hundred seventy-two".