20472354 has 48 divisors (see below), whose sum is σ = 51787008. Its totient is φ = 5723136.

The previous prime is 20472349. The next prime is 20472377. The reversal of 20472354 is 45327402.

20472354 = 232² + 233² + ... + 419².

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4194 + ... + 7650.

It is an arithmetic number, because the mean of its divisors is an integer number (1078896).

Almost surely, 2^20472354 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20472354, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25893504).

20472354 is an abundant number, since it is smaller than the sum of its proper divisors (31314654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20472354 is a wasteful number, since it uses less digits than its factorization.

20472354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3519 (or 3516 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 20472354 is about 4524.6385490998. The cubic root of 20472354 is about 273.5620991154.

Adding to 20472354 its reverse (45327402), we get a palindrome (65799756).

The spelling of 20472354 in words is "twenty million, four hundred seventy-two thousand, three hundred fifty-four".