402078270 has 64 divisors (see below), whose sum is σ = 1059816960. Its totient is φ = 96816000.

The previous prime is 402078263. The next prime is 402078283. The reversal of 402078270 is 72870204.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45796 + ... + 53864.

It is an arithmetic number, because the mean of its divisors is an integer number (16559640).

Almost surely, 2^402078270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402078270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529908480).

402078270 is an abundant number, since it is smaller than the sum of its proper divisors (657738690).

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

402078270 is a wasteful number, since it uses less digits than its factorization.

402078270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8241.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 402078270 is about 20051.8894371578. The cubic root of 402078270 is about 738.0801647630.

The spelling of 402078270 in words is "four hundred two million, seventy-eight thousand, two hundred seventy".