22987407 has 4 divisors (see below), whose sum is σ = 30649880. Its totient is φ = 15324936.

The previous prime is 22987387. The next prime is 22987409. The reversal of 22987407 is 70478922.

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

It is not a de Polignac number, because 22987407 - 2¹¹ = 22985359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22987409) 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, 3831232 + ... + 3831237.

It is an arithmetic number, because the mean of its divisors is an integer number (7662470).

Almost surely, 2^22987407 is an apocalyptic number.

22987407 is a deficient number, since it is larger than the sum of its proper divisors (7662473).

22987407 is an equidigital number, since it uses as much as digits as its factorization.

22987407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7662472.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 22987407 is about 4794.5184325436. The cubic root of 22987407 is about 284.3347858765.

The spelling of 22987407 in words is "twenty-two million, nine hundred eighty-seven thousand, four hundred seven".