20914680 has 32 divisors (see below), whose sum is σ = 62744400. Its totient is φ = 5577216.

The previous prime is 20914679. The next prime is 20914681. The reversal of 20914680 is 8641902.

It is an interprime number because it is at equal distance from previous prime (20914679) and next prime (20914681).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20914681) 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, 87025 + ... + 87264.

Almost surely, 2^20914680 is an apocalyptic number.

20914680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20914680 is an abundant number, since it is smaller than the sum of its proper divisors (41829720).

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

20914680 is a wasteful number, since it uses less digits than its factorization.

20914680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174303 (or 174299 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 20914680 is about 4573.2570450391. The cubic root of 20914680 is about 275.5182733215.

The spelling of 20914680 in words is "twenty million, nine hundred fourteen thousand, six hundred eighty".