22305828 has 12 divisors (see below), whose sum is σ = 52046960. Its totient is φ = 7435272.

The previous prime is 22305823. The next prime is 22305839. The reversal of 22305828 is 82850322.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 22305795 and 22305804.

It is not an unprimeable number, because it can be changed into a prime (22305823) 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, 929398 + ... + 929421.

Almost surely, 2^22305828 is an apocalyptic number.

It is an amenable number.

22305828 is an abundant number, since it is smaller than the sum of its proper divisors (29741132).

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

22305828 is a wasteful number, since it uses less digits than its factorization.

22305828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858826 (or 1858824 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 22305828 is about 4722.9046147472. The cubic root of 22305828 is about 281.4963597442.

The spelling of 22305828 in words is "twenty-two million, three hundred five thousand, eight hundred twenty-eight".