22987420 has 24 divisors (see below), whose sum is σ = 48888000. Its totient is φ = 9077952.

The previous prime is 22987409. The next prime is 22987427. The reversal of 22987420 is 2478922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22987427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5695 + ... + 8854.

It is an arithmetic number, because the mean of its divisors is an integer number (2037000).

Almost surely, 2^22987420 is an apocalyptic number.

22987420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22987420 is an abundant number, since it is smaller than the sum of its proper divisors (25900580).

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

22987420 is a wasteful number, since it uses less digits than its factorization.

22987420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14637 (or 14635 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 22987420 is about 4794.5197882583. The cubic root of 22987420 is about 284.3348394762.

The spelling of 22987420 in words is "twenty-two million, nine hundred eighty-seven thousand, four hundred twenty".