406213620 has 48 divisors (see below), whose sum is σ = 1151115840. Its totient is φ = 107017216.

The previous prime is 406213601. The next prime is 406213663. The reversal of 406213620 is 26312604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35805 + ... + 45764.

It is an arithmetic number, because the mean of its divisors is an integer number (23981580).

Almost surely, 2^406213620 is an apocalyptic number.

It is an amenable number.

406213620 is an abundant number, since it is smaller than the sum of its proper divisors (744902220).

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

406213620 is a wasteful number, since it uses less digits than its factorization.

406213620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81664 (or 81662 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 406213620 is about 20154.7418738122. The cubic root of 406213620 is about 740.6019086251.

The spelling of 406213620 in words is "four hundred six million, two hundred thirteen thousand, six hundred twenty".