20677260 has 24 divisors (see below), whose sum is σ = 57896496. Its totient is φ = 5513920.

The previous prime is 20677247. The next prime is 20677271. The reversal of 20677260 is 6277602.

It is a super-2 number, since 2×20677260² = 855098162215200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 172251 + ... + 172370.

It is an arithmetic number, because the mean of its divisors is an integer number (2412354).

Almost surely, 2^20677260 is an apocalyptic number.

20677260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20677260 is an abundant number, since it is smaller than the sum of its proper divisors (37219236).

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

20677260 is a wasteful number, since it uses less digits than its factorization.

20677260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344633 (or 344631 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 20677260 is about 4547.2255277257. The cubic root of 20677260 is about 274.4717573074.

The spelling of 20677260 in words is "twenty million, six hundred seventy-seven thousand, two hundred sixty".