620421234 has 16 divisors (see below), whose sum is σ = 1246409472. Its totient is φ = 205879248.

The previous prime is 620421223. The next prime is 620421257. The reversal of 620421234 is 432124026.

620421234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 230509 + ... + 233184.

It is an arithmetic number, because the mean of its divisors is an integer number (77900592).

Almost surely, 2^620421234 is an apocalyptic number.

620421234 is an abundant number, since it is smaller than the sum of its proper divisors (625988238).

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

620421234 is a wasteful number, since it uses less digits than its factorization.

620421234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463921.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 620421234 is about 24908.2563420244. The cubic root of 620421234 is about 852.8949659180.

The spelling of 620421234 in words is "six hundred twenty million, four hundred twenty-one thousand, two hundred thirty-four".