22461387 has 16 divisors (see below), whose sum is σ = 32366880. Its totient is φ = 13773312.

The previous prime is 22461371. The next prime is 22461389. The reversal of 22461387 is 78316422.

It is not a de Polignac number, because 22461387 - 2⁴ = 22461371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22461389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12289 + ... + 13997.

It is an arithmetic number, because the mean of its divisors is an integer number (2022930).

Almost surely, 2^22461387 is an apocalyptic number.

22461387 is a deficient number, since it is larger than the sum of its proper divisors (9905493).

22461387 is a wasteful number, since it uses less digits than its factorization.

22461387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062.

The product of its digits is 16128, while the sum is 33.

The square root of 22461387 is about 4739.3445749386. The cubic root of 22461387 is about 282.1492218645.

The spelling of 22461387 in words is "twenty-two million, four hundred sixty-one thousand, three hundred eighty-seven".