20472374 has 16 divisors (see below), whose sum is σ = 33149088. Its totient is φ = 9426432.

The previous prime is 20472349. The next prime is 20472377. The reversal of 20472374 is 47327402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20472377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16214 + ... + 17430.

It is an arithmetic number, because the mean of its divisors is an integer number (2071818).

Almost surely, 2^20472374 is an apocalyptic number.

20472374 is a deficient number, since it is larger than the sum of its proper divisors (12676714).

20472374 is a wasteful number, since it uses less digits than its factorization.

20472374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 20472374 is about 4524.6407592206. The cubic root of 20472374 is about 273.5621881988.

Adding to 20472374 its reverse (47327402), we get a palindrome (67799776).

The spelling of 20472374 in words is "twenty million, four hundred seventy-two thousand, three hundred seventy-four".