22087130 has 64 divisors (see below), whose sum is σ = 45722880. Its totient is φ = 7620096.

The previous prime is 22087129. The next prime is 22087147. The reversal of 22087130 is 3178022.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 22087096 and 22087105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248126 + ... + 248214.

It is an arithmetic number, because the mean of its divisors is an integer number (714420).

Almost surely, 2^22087130 is an apocalyptic number.

22087130 is an abundant number, since it is smaller than the sum of its proper divisors (23635750).

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

22087130 is a wasteful number, since it uses less digits than its factorization.

22087130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 22087130 is about 4699.6946709334. The cubic root of 22087130 is about 280.5733574445.

The spelling of 22087130 in words is "twenty-two million, eighty-seven thousand, one hundred thirty".