406512620 has 24 divisors (see below), whose sum is σ = 854748384. Its totient is φ = 162400896.

The previous prime is 406512607. The next prime is 406512629. The reversal of 406512620 is 26215604.

It is a self number, because there is not a number n which added to its sum of digits gives 406512620.

It is not an unprimeable number, because it can be changed into a prime (406512629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4112 + ... + 28808.

It is an arithmetic number, because the mean of its divisors is an integer number (35614516).

Almost surely, 2^406512620 is an apocalyptic number.

It is an amenable number.

406512620 is an abundant number, since it is smaller than the sum of its proper divisors (448235764).

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

406512620 is a wasteful number, since it uses less digits than its factorization.

406512620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25529 (or 25527 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 406512620 is about 20162.1581186142. The cubic root of 406512620 is about 740.7835746669.

The spelling of 406512620 in words is "four hundred six million, five hundred twelve thousand, six hundred twenty".