20412357 has 8 divisors (see below), whose sum is σ = 31104576. Its totient is φ = 11664192.

The previous prime is 20412349. The next prime is 20412377. The reversal of 20412357 is 75321402.

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

It is not a de Polignac number, because 20412357 - 2³ = 20412349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20412377) 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, 485988 + ... + 486029.

It is an arithmetic number, because the mean of its divisors is an integer number (3888072).

Almost surely, 2^20412357 is an apocalyptic number.

It is an amenable number.

20412357 is a deficient number, since it is larger than the sum of its proper divisors (10692219).

20412357 is an equidigital number, since it uses as much as digits as its factorization.

20412357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972027.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20412357 is about 4518.0036520570. The cubic root of 20412357 is about 273.2946007315.

Adding to 20412357 its reverse (75321402), we get a palindrome (95733759).

It can be divided in two parts, 204 and 12357, that added together give a triangular number (12561 = T₁₅₈).

The spelling of 20412357 in words is "twenty million, four hundred twelve thousand, three hundred fifty-seven".