22714728 has 64 divisors (see below), whose sum is σ = 60456000. Its totient is φ = 7091712.

The previous prime is 22714721. The next prime is 22714729. The reversal of 22714728 is 82741722.

It is a super-2 number, since 2×22714728² = 1031917736227968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22714721) 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, 49476 + ... + 49932.

It is an arithmetic number, because the mean of its divisors is an integer number (944625).

Almost surely, 2^22714728 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 22714728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30228000).

22714728 is an abundant number, since it is smaller than the sum of its proper divisors (37741272).

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

22714728 is a wasteful number, since it uses less digits than its factorization.

22714728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 590 counting only the distinct ones).

The product of its digits is 12544, while the sum is 33.

The square root of 22714728 is about 4765.9970625253. The cubic root of 22714728 is about 283.2060413981.

The spelling of 22714728 in words is "twenty-two million, seven hundred fourteen thousand, seven hundred twenty-eight".