202551428 has 24 divisors (see below), whose sum is σ = 370137600. Its totient is φ = 96863648.

The previous prime is 202551407. The next prime is 202551463. The reversal of 202551428 is 824155202.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a self number, because there is not a number n which added to its sum of digits gives 202551428.

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, 4253 + ... + 20571.

It is an arithmetic number, because the mean of its divisors is an integer number (15422400).

Almost surely, 2^202551428 is an apocalyptic number.

It is an amenable number.

202551428 is a deficient number, since it is larger than the sum of its proper divisors (167586172).

202551428 is a wasteful number, since it uses less digits than its factorization.

202551428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16459 (or 16457 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 202551428 is about 14232.0563517715. The cubic root of 202551428 is about 587.2798540201.

The spelling of 202551428 in words is "two hundred two million, five hundred fifty-one thousand, four hundred twenty-eight".