20074157 has 4 divisors (see below), whose sum is σ = 20135136. Its totient is φ = 20013180.

The previous prime is 20074151. The next prime is 20074169. The reversal of 20074157 is 75147002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20074157 - 2⁴ = 20074141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20074151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29993 + ... + 30654.

It is an arithmetic number, because the mean of its divisors is an integer number (5033784).

Almost surely, 2^20074157 is an apocalyptic number.

It is an amenable number.

20074157 is a deficient number, since it is larger than the sum of its proper divisors (60979).

20074157 is an equidigital number, since it uses as much as digits as its factorization.

20074157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60978.

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

The square root of 20074157 is about 4480.4192884149. The cubic root of 20074157 is about 271.7768363099.

The spelling of 20074157 in words is "twenty million, seventy-four thousand, one hundred fifty-seven".