406128702 has 32 divisors (see below), whose sum is σ = 960307200. Its totient is φ = 112035168.

The previous prime is 406128677. The next prime is 406128703. The reversal of 406128702 is 207821604.

It is a self number, because there is not a number n which added to its sum of digits gives 406128702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406128703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165502 + ... + 167937.

It is an arithmetic number, because the mean of its divisors is an integer number (30009600).

Almost surely, 2^406128702 is an apocalyptic number.

406128702 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

406128702 is an abundant number, since it is smaller than the sum of its proper divisors (554178498).

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

406128702 is a wasteful number, since it uses less digits than its factorization.

406128702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333480.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 406128702 is about 20152.6351130566. The cubic root of 406128702 is about 740.5502980006.

The spelling of 406128702 in words is "four hundred six million, one hundred twenty-eight thousand, seven hundred two".