20315126 has 8 divisors (see below), whose sum is σ = 32816784. Its totient is φ = 9376200.

The previous prime is 20315117. The next prime is 20315129. The reversal of 20315126 is 62151302.

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

It is a junction number, because it is equal to n+sod(n) for n = 20315098 and 20315107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20315129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390650 + ... + 390701.

It is an arithmetic number, because the mean of its divisors is an integer number (4102098).

Almost surely, 2^20315126 is an apocalyptic number.

20315126 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20315126 is a deficient number, since it is larger than the sum of its proper divisors (12501658).

20315126 is a wasteful number, since it uses less digits than its factorization.

20315126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781366.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 20315126 is about 4507.2304134579. The cubic root of 20315126 is about 272.8599781980.

Adding to 20315126 its reverse (62151302), we get a palindrome (82466428).

The spelling of 20315126 in words is "twenty million, three hundred fifteen thousand, one hundred twenty-six".