22472736 has 96 divisors (see below), whose sum is σ = 69346368. Its totient is φ = 6282240.

The previous prime is 22472731. The next prime is 22472741. The reversal of 22472736 is 63727422.

It is an interprime number because it is at equal distance from previous prime (22472731) and next prime (22472741).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 22472697 and 22472706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22472731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12910 + ... + 14546.

It is an arithmetic number, because the mean of its divisors is an integer number (722358).

Almost surely, 2^22472736 is an apocalyptic number.

22472736 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22472736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34673184).

22472736 is an abundant number, since it is smaller than the sum of its proper divisors (46873632).

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

22472736 is a wasteful number, since it uses less digits than its factorization.

22472736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674 (or 1666 counting only the distinct ones).

The product of its digits is 28224, while the sum is 33.

The square root of 22472736 is about 4740.5417411937. The cubic root of 22472736 is about 282.1967341035.

The spelling of 22472736 in words is "twenty-two million, four hundred seventy-two thousand, seven hundred thirty-six".