20774620 has 12 divisors (see below), whose sum is σ = 43626744. Its totient is φ = 8309840.

The previous prime is 20774609. The next prime is 20774627. The reversal of 20774620 is 2647702.

It is a super-2 number, since 2×20774620² = 863169672288800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20774627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519346 + ... + 519385.

It is an arithmetic number, because the mean of its divisors is an integer number (3635562).

Almost surely, 2^20774620 is an apocalyptic number.

20774620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20774620 is an abundant number, since it is smaller than the sum of its proper divisors (22852124).

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

20774620 is a wasteful number, since it uses less digits than its factorization.

20774620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038740 (or 1038738 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 20774620 is about 4557.9183845260. The cubic root of 20774620 is about 274.9018713248.

The spelling of 20774620 in words is "twenty million, seven hundred seventy-four thousand, six hundred twenty".