20959480 has 16 divisors (see below), whose sum is σ = 47158920. Its totient is φ = 8383776.

The previous prime is 20959459. The next prime is 20959483. The reversal of 20959480 is 8495902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20959483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261954 + ... + 262033.

Almost surely, 2^20959480 is an apocalyptic number.

20959480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20959480 is an abundant number, since it is smaller than the sum of its proper divisors (26199440).

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

20959480 is a wasteful number, since it uses less digits than its factorization.

20959480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523998 (or 523994 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 20959480 is about 4578.1524657879. The cubic root of 20959480 is about 275.7148563900.

The spelling of 20959480 in words is "twenty million, nine hundred fifty-nine thousand, four hundred eighty".