20472315 has 8 divisors (see below), whose sum is σ = 32755728. Its totient is φ = 10918560.

The previous prime is 20472299. The next prime is 20472341. The reversal of 20472315 is 51327402.

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

It is not a de Polignac number, because 20472315 - 2⁴ = 20472299 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682396 + ... + 682425.

It is an arithmetic number, because the mean of its divisors is an integer number (4094466).

Almost surely, 2^20472315 is an apocalyptic number.

20472315 is a deficient number, since it is larger than the sum of its proper divisors (12283413).

20472315 is a wasteful number, since it uses less digits than its factorization.

20472315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364829.

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

The square root of 20472315 is about 4524.6342393612. The cubic root of 20472315 is about 273.5619254026.

Adding to 20472315 its reverse (51327402), we get a palindrome (71799717).

The spelling of 20472315 in words is "twenty million, four hundred seventy-two thousand, three hundred fifteen".