621431148 has 48 divisors (see below), whose sum is σ = 1591029216. Its totient is φ = 187599360.

The previous prime is 621431123. The next prime is 621431149. The reversal of 621431148 is 841134126.

It is not an unprimeable number, because it can be changed into a prime (621431149) 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, 29313 + ... + 45848.

It is an arithmetic number, because the mean of its divisors is an integer number (33146442).

Almost surely, 2^621431148 is an apocalyptic number.

It is an amenable number.

621431148 is an abundant number, since it is smaller than the sum of its proper divisors (969598068).

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

621431148 is a wasteful number, since it uses less digits than its factorization.

621431148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75234 (or 75232 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 621431148 is about 24928.5207744062. The cubic root of 621431148 is about 853.3574923309.

The spelling of 621431148 in words is "six hundred twenty-one million, four hundred thirty-one thousand, one hundred forty-eight".