20465630 has 32 divisors (see below), whose sum is σ = 38864448. Its totient is φ = 7744000.

The previous prime is 20465609. The next prime is 20465647. The reversal of 20465630 is 3656402.

It is a super-2 number, since 2×20465630² = 837684022593800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20465630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22790 + ... + 23670.

It is an arithmetic number, because the mean of its divisors is an integer number (1214514).

Almost surely, 2^20465630 is an apocalyptic number.

20465630 is a deficient number, since it is larger than the sum of its proper divisors (18398818).

20465630 is a wasteful number, since it uses less digits than its factorization.

20465630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 20465630 is about 4523.8954452993. The cubic root of 20465630 is about 273.5321459898.

The spelling of 20465630 in words is "twenty million, four hundred sixty-five thousand, six hundred thirty".