20626648 has 32 divisors (see below), whose sum is σ = 45108000. Its totient is φ = 8838816.

The previous prime is 20626643. The next prime is 20626657. The reversal of 20626648 is 84662602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20626643) 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, 1015 + ... + 6502.

It is an arithmetic number, because the mean of its divisors is an integer number (1409625).

Almost surely, 2^20626648 is an apocalyptic number.

20626648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20626648 is an abundant number, since it is smaller than the sum of its proper divisors (24481352).

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

20626648 is an equidigital number, since it uses as much as digits as its factorization.

20626648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7544 (or 7526 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 20626648 is about 4541.6569663505. The cubic root of 20626648 is about 274.2476316382.

The spelling of 20626648 in words is "twenty million, six hundred twenty-six thousand, six hundred forty-eight".