402536481 has 8 divisors (see below), whose sum is σ = 538854624. Its totient is φ = 267288000.

The previous prime is 402536473. The next prime is 402536503. The reversal of 402536481 is 184635204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402536481 - 2³ = 402536473 is a prime.

It is a super-2 number, since 2×402536481² = 324071237071726722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402536411) 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, 266536 + ... + 268041.

It is an arithmetic number, because the mean of its divisors is an integer number (67356828).

Almost surely, 2^402536481 is an apocalyptic number.

It is an amenable number.

402536481 is a deficient number, since it is larger than the sum of its proper divisors (136318143).

402536481 is a wasteful number, since it uses less digits than its factorization.

402536481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534831.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 402536481 is about 20063.3118153509. The cubic root of 402536481 is about 738.3604319701.

The spelling of 402536481 in words is "four hundred two million, five hundred thirty-six thousand, four hundred eighty-one".