402044580 has 384 divisors, whose sum is σ = 1527644160. Its totient is φ = 85847040.

The previous prime is 402044557. The next prime is 402044581. The reversal of 402044580 is 85440204.

402044580 is a `hidden beast` number, since 4 + 0 + 204 + 458 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (402044581) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5507424 + ... + 5507496.

It is an arithmetic number, because the mean of its divisors is an integer number (3978240).

Almost surely, 2^402044580 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402044580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (763822080).

402044580 is an abundant number, since it is smaller than the sum of its proper divisors (1125599580).

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

402044580 is a wasteful number, since it uses less digits than its factorization.

402044580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 402044580 is about 20051.0493490989. The cubic root of 402044580 is about 738.0595496928.

Adding to 402044580 its reverse (85440204), we get a palindrome (487484784).

The spelling of 402044580 in words is "four hundred two million, forty-four thousand, five hundred eighty".