20623466 has 16 divisors (see below), whose sum is σ = 32610600. Its totient is φ = 9766848.

The previous prime is 20623453. The next prime is 20623469. The reversal of 20623466 is 66432602.

It can be written as a sum of positive squares in 4 ways, for example, as 19936225 + 687241 = 4465^2 + 829^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (20623469) 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, 281 + ... + 6428.

Almost surely, 2^20623466 is an apocalyptic number.

20623466 is a deficient number, since it is larger than the sum of its proper divisors (11987134).

20623466 is a wasteful number, since it uses less digits than its factorization.

20623466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6793.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 20623466 is about 4541.3066401643. The cubic root of 20623466 is about 274.2335285090.

The spelling of 20623466 in words is "twenty million, six hundred twenty-three thousand, four hundred sixty-six".