20128374 has 48 divisors (see below), whose sum is σ = 52779168. Its totient is φ = 5412096.

The previous prime is 20128369. The next prime is 20128387. The reversal of 20128374 is 47382102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2557 + ... + 6840.

It is an arithmetic number, because the mean of its divisors is an integer number (1099566).

Almost surely, 2^20128374 is an apocalyptic number.

20128374 is an abundant number, since it is smaller than the sum of its proper divisors (32650794).

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

20128374 is a wasteful number, since it uses less digits than its factorization.

20128374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9429 (or 9426 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20128374 is about 4486.4656468093. The cubic root of 20128374 is about 272.0212912255.

It can be divided in two parts, 20128 and 374, that added together give a palindrome (20502).

The spelling of 20128374 in words is "twenty million, one hundred twenty-eight thousand, three hundred seventy-four".