20363157 has 16 divisors (see below), whose sum is σ = 30543360. Its totient is φ = 13573980.

The previous prime is 20363153. The next prime is 20363159. The reversal of 20363157 is 75136302.

It is a happy number.

20363157 is a `hidden beast` number, since 20 + 3 + 631 + 5 + 7 = 666.

It is not a de Polignac number, because 20363157 - 2² = 20363153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20363157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20363153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2469 + ... + 6842.

It is an arithmetic number, because the mean of its divisors is an integer number (1908960).

Almost surely, 2^20363157 is an apocalyptic number.

20363157 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20363157 is a deficient number, since it is larger than the sum of its proper divisors (10180203).

20363157 is an frugal number, since it uses more digits than its factorization.

20363157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9332 (or 9314 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 20363157 is about 4512.5554844234. Note that the first 3 decimals coincide. The cubic root of 20363157 is about 273.0748496610.

Adding to 20363157 its reverse (75136302), we get a palindrome (95499459).

The spelling of 20363157 in words is "twenty million, three hundred sixty-three thousand, one hundred fifty-seven".