201572120 has 16 divisors (see below), whose sum is σ = 453537360. Its totient is φ = 80628832.

The previous prime is 201572099. The next prime is 201572149. The reversal of 201572120 is 21275102.

It is a super-2 number, since 2×201572120² = 81262639122588800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 201572092 and 201572101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2519612 + ... + 2519691.

It is an arithmetic number, because the mean of its divisors is an integer number (28346085).

Almost surely, 2^201572120 is an apocalyptic number.

201572120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201572120 is an abundant number, since it is smaller than the sum of its proper divisors (251965240).

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

201572120 is a wasteful number, since it uses less digits than its factorization.

201572120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5039314 (or 5039310 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 201572120 is about 14197.6096579671. The cubic root of 201572120 is about 586.3318524016.

The spelling of 201572120 in words is "two hundred one million, five hundred seventy-two thousand, one hundred twenty".