406731628 has 12 divisors (see below), whose sum is σ = 716976792. Its totient is φ = 201881120.

The previous prime is 406731617. The next prime is 406731629. The reversal of 406731628 is 826137604.

It is not an unprimeable number, because it can be changed into a prime (406731629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370558 + ... + 371653.

It is an arithmetic number, because the mean of its divisors is an integer number (59748066).

Almost surely, 2^406731628 is an apocalyptic number.

It is an amenable number.

406731628 is a deficient number, since it is larger than the sum of its proper divisors (310245164).

406731628 is a wasteful number, since it uses less digits than its factorization.

406731628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742352 (or 742350 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 406731628 is about 20167.5885519315. The cubic root of 406731628 is about 740.9165827580.

The spelling of 406731628 in words is "four hundred six million, seven hundred thirty-one thousand, six hundred twenty-eight".