20623460 has 48 divisors (see below), whose sum is σ = 50887872. Its totient is φ = 6921600.

The previous prime is 20623453. The next prime is 20623469. The reversal of 20623460 is 6432602.

It is not an unprimeable number, because it can be changed into a prime (20623469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 746 + ... + 6465.

It is an arithmetic number, because the mean of its divisors is an integer number (1060164).

Almost surely, 2^20623460 is an apocalyptic number.

20623460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20623460 is an abundant number, since it is smaller than the sum of its proper divisors (30264412).

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

20623460 is a wasteful number, since it uses less digits than its factorization.

20623460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7244 (or 7242 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 20623460 is about 4541.3059795614. The cubic root of 20623460 is about 274.2335019147.

The spelling of 20623460 in words is "twenty million, six hundred twenty-three thousand, four hundred sixty".