427629644 has 24 divisors (see below), whose sum is σ = 817952688. Its totient is φ = 194420160.

The previous prime is 427629613. The next prime is 427629649. The reversal of 427629644 is 446926724.

It is a super-2 number, since 2×427629644² = 365734224855133472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 427629595 and 427629604.

It is not an unprimeable number, because it can be changed into a prime (427629649) 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, 57887 + ... + 64854.

It is an arithmetic number, because the mean of its divisors is an integer number (34081362).

Almost surely, 2^427629644 is an apocalyptic number.

It is an amenable number.

427629644 is a deficient number, since it is larger than the sum of its proper divisors (390323044).

427629644 is a wasteful number, since it uses less digits than its factorization.

427629644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122825 (or 122823 counting only the distinct ones).

The product of its digits is 580608, while the sum is 44.

The square root of 427629644 is about 20679.2080119138. The cubic root of 427629644 is about 753.3947702699.

The spelling of 427629644 in words is "four hundred twenty-seven million, six hundred twenty-nine thousand, six hundred forty-four".