20774100 has 36 divisors (see below), whose sum is σ = 60107264. Its totient is φ = 5539680.

The previous prime is 20774071. The next prime is 20774101. The reversal of 20774100 is 147702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20774101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34324 + ... + 34923.

Almost surely, 2^20774100 is an apocalyptic number.

20774100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20774100 is an abundant number, since it is smaller than the sum of its proper divisors (39333164).

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

20774100 is a wasteful number, since it uses less digits than its factorization.

20774100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69264 (or 69257 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 20774100 is about 4557.8613405851. The cubic root of 20774100 is about 274.8995776581.

The spelling of 20774100 in words is "twenty million, seven hundred seventy-four thousand, one hundred".