20094157 has 4 divisors (see below), whose sum is σ = 20967840. Its totient is φ = 19220476.

The previous prime is 20094143. The next prime is 20094241. The reversal of 20094157 is 75149002.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75149002 = 2 ⋅37574501.

It is a cyclic number.

It is not a de Polignac number, because 20094157 - 2²³ = 11705549 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 (20094127) 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, 436807 + ... + 436852.

It is an arithmetic number, because the mean of its divisors is an integer number (5241960).

Almost surely, 2^20094157 is an apocalyptic number.

It is an amenable number.

20094157 is a deficient number, since it is larger than the sum of its proper divisors (873683).

20094157 is an equidigital number, since it uses as much as digits as its factorization.

20094157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873682.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 20094157 is about 4482.6506667373. The cubic root of 20094157 is about 271.8670639688.

The spelling of 20094157 in words is "twenty million, ninety-four thousand, one hundred fifty-seven".