402622560 has 144 divisors (see below), whose sum is σ = 1454858496. Its totient is φ = 101044224.

The previous prime is 402622537. The next prime is 402622579. The reversal of 402622560 is 65226204.

402622560 is a `hidden beast` number, since 40 + 2 + 62 + 2 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16257 + ... + 32703.

It is an arithmetic number, because the mean of its divisors is an integer number (10103184).

Almost surely, 2^402622560 is an apocalyptic number.

402622560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402622560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (727429248).

402622560 is an abundant number, since it is smaller than the sum of its proper divisors (1052235936).

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

402622560 is a wasteful number, since it uses less digits than its factorization.

402622560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16485 (or 16474 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 402622560 is about 20065.4568849055. The cubic root of 402622560 is about 738.4130589168.

Adding to 402622560 its reverse (65226204), we get a palindrome (467848764).

The spelling of 402622560 in words is "four hundred two million, six hundred twenty-two thousand, five hundred sixty".