20157074 has 8 divisors (see below), whose sum is σ = 34555008. Its totient is φ = 8638740.

The previous prime is 20157061. The next prime is 20157077. The reversal of 20157074 is 47075102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20157077) 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 3 ways as a sum of consecutive naturals, for example, 719882 + ... + 719909.

It is an arithmetic number, because the mean of its divisors is an integer number (4319376).

Almost surely, 2^20157074 is an apocalyptic number.

20157074 is a deficient number, since it is larger than the sum of its proper divisors (14397934).

20157074 is a wasteful number, since it uses less digits than its factorization.

20157074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439800.

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 20157074 is about 4489.6630163076. The cubic root of 20157074 is about 272.1505168228.

It can be divided in two parts, 201 and 57074, that added together give a palindrome (57275).

The spelling of 20157074 in words is "twenty million, one hundred fifty-seven thousand, seventy-four".