402143528 has 32 divisors (see below), whose sum is σ = 787557600. Its totient is φ = 192313152.

The previous prime is 402143527. The next prime is 402143593. The reversal of 402143528 is 825341204.

It is a happy number.

It is a super-2 number, since 2×402143528² = 323438834224573568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402143528.

It is not an unprimeable number, because it can be changed into a prime (402143527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5951 + ... + 28977.

It is an arithmetic number, because the mean of its divisors is an integer number (24611175).

Almost surely, 2^402143528 is an apocalyptic number.

It is an amenable number.

402143528 is a deficient number, since it is larger than the sum of its proper divisors (385414072).

402143528 is a wasteful number, since it uses less digits than its factorization.

402143528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23129 (or 23125 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 402143528 is about 20053.5165993399. The cubic root of 402143528 is about 738.1200931661.

The spelling of 402143528 in words is "four hundred two million, one hundred forty-three thousand, five hundred twenty-eight".