20274080 has 24 divisors (see below), whose sum is σ = 47897892. Its totient is φ = 8109568.

The previous prime is 20274073. The next prime is 20274091. The reversal of 20274080 is 8047202.

It can be written as a sum of positive squares in 2 ways, for example, as 19678096 + 595984 = 4436^2 + 772^2 .

It is a super-2 number, since 2×20274080² = 822076639692800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63197 + ... + 63516.

Almost surely, 2^20274080 is an apocalyptic number.

20274080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20274080 is an abundant number, since it is smaller than the sum of its proper divisors (27623812).

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

20274080 is a wasteful number, since it uses less digits than its factorization.

20274080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126728 (or 126720 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 20274080 is about 4502.6747606284. The cubic root of 20274080 is about 272.6760862860.

The spelling of 20274080 in words is "twenty million, two hundred seventy-four thousand, eighty".