20294157 has 8 divisors (see below), whose sum is σ = 29140384. Its totient is φ = 12488688.

The previous prime is 20294137. The next prime is 20294161. The reversal of 20294157 is 75149202.

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

It is not a de Polignac number, because 20294157 - 2¹⁴ = 20277773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20294117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260143 + ... + 260220.

It is an arithmetic number, because the mean of its divisors is an integer number (3642548).

Almost surely, 2^20294157 is an apocalyptic number.

It is an amenable number.

20294157 is a deficient number, since it is larger than the sum of its proper divisors (8846227).

20294157 is a wasteful number, since it uses less digits than its factorization.

20294157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520379.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 20294157 is about 4504.9036615670. The cubic root of 20294157 is about 272.7660650779.

The spelling of 20294157 in words is "twenty million, two hundred ninety-four thousand, one hundred fifty-seven".