20948616 has 48 divisors (see below), whose sum is σ = 61102860. Its totient is φ = 6445440.

The previous prime is 20948579. The next prime is 20948617. The reversal of 20948616 is 61684902.

It can be written as a sum of positive squares in 2 ways, for example, as 20520900 + 427716 = 4530^2 + 654^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20948617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10255 + ... + 12126.

Almost surely, 2^20948616 is an apocalyptic number.

20948616 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20948616 is an abundant number, since it is smaller than the sum of its proper divisors (40154244).

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

20948616 is a wasteful number, since it uses less digits than its factorization.

20948616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22406 (or 22399 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 20948616 is about 4576.9658071696. The cubic root of 20948616 is about 275.6672107442.

The spelling of 20948616 in words is "twenty million, nine hundred forty-eight thousand, six hundred sixteen".