402080070 has 128 divisors (see below), whose sum is σ = 1153751040. Its totient is φ = 87736320.

The previous prime is 402080069. The next prime is 402080083. The reversal of 402080070 is 70080204.

402080070 = 21² + 22² + ... + 1064².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 626950 + ... + 627590.

It is an arithmetic number, because the mean of its divisors is an integer number (9013680).

Almost surely, 2^402080070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402080070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (576875520).

402080070 is an abundant number, since it is smaller than the sum of its proper divisors (751670970).

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

402080070 is a wasteful number, since it uses less digits than its factorization.

402080070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 402080070 is about 20051.9343206584. The cubic root of 402080070 is about 738.0812661591.

The spelling of 402080070 in words is "four hundred two million, eighty thousand, seventy".