22870587 has 4 divisors (see below), whose sum is σ = 30494120. Its totient is φ = 15247056.

The previous prime is 22870577. The next prime is 22870607. The reversal of 22870587 is 78507822.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22870587 - 2¹² = 22866491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22870537) 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, 3811762 + ... + 3811767.

It is an arithmetic number, because the mean of its divisors is an integer number (7623530).

Almost surely, 2^22870587 is an apocalyptic number.

22870587 is a deficient number, since it is larger than the sum of its proper divisors (7623533).

22870587 is an equidigital number, since it uses as much as digits as its factorization.

22870587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7623532.

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 22870587 is about 4782.3202527643. The cubic root of 22870587 is about 283.8523127844.

The spelling of 22870587 in words is "twenty-two million, eight hundred seventy thousand, five hundred eighty-seven".