22270528 has 28 divisors (see below), whose sum is σ = 50507392. Its totient is φ = 9544320.

The previous prime is 22270519. The next prime is 22270529. The reversal of 22270528 is 82507222.

It is a tau number, because it is divible by the number of its divisors (28).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 22270496 and 22270505.

It is not an unprimeable number, because it can be changed into a prime (22270529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24408 + ... + 25303.

Almost surely, 2^22270528 is an apocalyptic number.

22270528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22270528 is an abundant number, since it is smaller than the sum of its proper divisors (28236864).

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

22270528 is an equidigital number, since it uses as much as digits as its factorization.

22270528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49730 (or 49720 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 22270528 is about 4719.1660280181. The cubic root of 22270528 is about 281.3477876918.

The spelling of 22270528 in words is "twenty-two million, two hundred seventy thousand, five hundred twenty-eight".