20470315 has 16 divisors (see below), whose sum is σ = 26046720. Its totient is φ = 15400800.

The previous prime is 20470297. The next prime is 20470321. The reversal of 20470315 is 51307402.

It is not a de Polignac number, because 20470315 - 2⁷ = 20470187 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13632 + ... + 15058.

It is an arithmetic number, because the mean of its divisors is an integer number (1627920).

Almost surely, 2^20470315 is an apocalyptic number.

20470315 is a deficient number, since it is larger than the sum of its proper divisors (5576405).

20470315 is a wasteful number, since it uses less digits than its factorization.

20470315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20470315 is about 4524.4132216233. The cubic root of 20470315 is about 273.5530167591.

Adding to 20470315 its reverse (51307402), we get a palindrome (71777717).

The spelling of 20470315 in words is "twenty million, four hundred seventy thousand, three hundred fifteen".