402053634 has 24 divisors (see below), whose sum is σ = 872143740. Its totient is φ = 133859808.

The previous prime is 402053633. The next prime is 402053683. The reversal of 402053634 is 436350204.

402053634 is a `hidden beast` number, since 4 + 0 + 20 + 5 + 3 + 634 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 357096609 + 44957025 = 18897^2 + 6705^2 .

It is a super-2 number, since 2×402053634² = 323294249225211912, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402053598 and 402053607.

It is not an unprimeable number, because it can be changed into a prime (402053633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3052 + ... + 28520.

Almost surely, 2^402053634 is an apocalyptic number.

402053634 is an abundant number, since it is smaller than the sum of its proper divisors (470090106).

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

402053634 is a wasteful number, since it uses less digits than its factorization.

402053634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26354 (or 26351 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 402053634 is about 20051.2751215478. The cubic root of 402053634 is about 738.0650899913.

The spelling of 402053634 in words is "four hundred two million, fifty-three thousand, six hundred thirty-four".