22047072 has 48 divisors (see below), whose sum is σ = 58242240. Its totient is φ = 7302272.

The previous prime is 22047059. The next prime is 22047097. The reversal of 22047072 is 27074022.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 16543 + ... + 17825.

It is an arithmetic number, because the mean of its divisors is an integer number (1213380).

Almost surely, 2^22047072 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 22047072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29121120).

22047072 is an abundant number, since it is smaller than the sum of its proper divisors (36195168).

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

22047072 is a wasteful number, since it uses less digits than its factorization.

22047072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475 (or 1467 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 22047072 is about 4695.4309706352. The cubic root of 22047072 is about 280.4036355444.

The spelling of 22047072 in words is "twenty-two million, forty-seven thousand, seventy-two".