20474112 has 72 divisors (see below), whose sum is σ = 55629504. Its totient is φ = 6682624.

The previous prime is 20474053. The next prime is 20474119. The reversal of 20474112 is 21147402.

It is a happy number.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20474119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40453 + ... + 40955.

It is an arithmetic number, because the mean of its divisors is an integer number (772632).

Almost surely, 2^20474112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20474112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27814752).

20474112 is an abundant number, since it is smaller than the sum of its proper divisors (35155392).

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

20474112 is an equidigital number, since it uses as much as digits as its factorization.

20474112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 20474112 is about 4524.8328145911. The cubic root of 20474112 is about 273.5699293240.

The spelling of 20474112 in words is "twenty million, four hundred seventy-four thousand, one hundred twelve".