22421730 has 16 divisors (see below), whose sum is σ = 53812224. Its totient is φ = 5979120.

The previous prime is 22421699. The next prime is 22421747. The reversal of 22421730 is 3712422.

It is a junction number, because it is equal to n+sod(n) for n = 22421697 and 22421706.

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, 373666 + ... + 373725.

It is an arithmetic number, because the mean of its divisors is an integer number (3363264).

Almost surely, 2^22421730 is an apocalyptic number.

22421730 is an abundant number, since it is smaller than the sum of its proper divisors (31390494).

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

22421730 is a wasteful number, since it uses less digits than its factorization.

22421730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747401.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 22421730 is about 4735.1589202476. The cubic root of 22421730 is about 281.9830732761.

The spelling of 22421730 in words is "twenty-two million, four hundred twenty-one thousand, seven hundred thirty".