402534680 has 16 divisors (see below), whose sum is σ = 905703120. Its totient is φ = 161013856.

The previous prime is 402534677. The next prime is 402534689. The reversal of 402534680 is 86435204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402534689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5031644 + ... + 5031723.

It is an arithmetic number, because the mean of its divisors is an integer number (56606445).

Almost surely, 2^402534680 is an apocalyptic number.

402534680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402534680 is an abundant number, since it is smaller than the sum of its proper divisors (503168440).

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

402534680 is a wasteful number, since it uses less digits than its factorization.

402534680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10063378 (or 10063374 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 402534680 is about 20063.2669323817. The cubic root of 402534680 is about 738.3593307953.

Adding to 402534680 its reverse (86435204), we get a palindrome (488969884).

The spelling of 402534680 in words is "four hundred two million, five hundred thirty-four thousand, six hundred eighty".