438220626 has 16 divisors (see below), whose sum is σ = 876679200. Its totient is φ = 146033888.

The previous prime is 438220609. The next prime is 438220691. The reversal of 438220626 is 626022834.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21865 + ... + 36803.

It is an arithmetic number, because the mean of its divisors is an integer number (54792450).

Almost surely, 2^438220626 is an apocalyptic number.

438220626 is an abundant number, since it is smaller than the sum of its proper divisors (438458574).

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

438220626 is a wasteful number, since it uses less digits than its factorization.

438220626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19833.

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 438220626 is about 20933.7198318885. The cubic root of 438220626 is about 759.5638228947.

The spelling of 438220626 in words is "four hundred thirty-eight million, two hundred twenty thousand, six hundred twenty-six".