20270912 has 56 divisors (see below), whose sum is σ = 43013376. Its totient is φ = 9456128.

The previous prime is 20270911. The next prime is 20270947. The reversal of 20270912 is 21907202.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20270911) by changing a digit.

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, 69038 + ... + 69330.

It is an arithmetic number, because the mean of its divisors is an integer number (768096).

Almost surely, 2^20270912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20270912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21506688).

20270912 is an abundant number, since it is smaller than the sum of its proper divisors (22742464).

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

20270912 is a wasteful number, since it uses less digits than its factorization.

20270912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20270912 is about 4502.3229559862. The cubic root of 20270912 is about 272.6618828821.

It can be divided in two parts, 20270 and 912, that multiplied together give a triangular number (18486240 = T₆₀₈₀).

The spelling of 20270912 in words is "twenty million, two hundred seventy thousand, nine hundred twelve".