145206972 has 24 divisors (see below), whose sum is σ = 376462800. Its totient is φ = 48402288.

The previous prime is 145206967. The next prime is 145206989. The reversal of 145206972 is 279602541.

145206972 is a `hidden beast` number, since 1 + 4 + 520 + 69 + 72 = 666.

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 7 ways as a sum of consecutive naturals, for example, 672147 + ... + 672362.

It is an arithmetic number, because the mean of its divisors is an integer number (15685950).

Almost surely, 2^145206972 is an apocalyptic number.

145206972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145206972 is an abundant number, since it is smaller than the sum of its proper divisors (231255828).

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

145206972 is a wasteful number, since it uses less digits than its factorization.

145206972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344522 (or 1344514 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 145206972 is about 12050.1855587373. The cubic root of 145206972 is about 525.6086329142.

The spelling of 145206972 in words is "one hundred forty-five million, two hundred six thousand, nine hundred seventy-two".