22434487 has 4 divisors (see below), whose sum is σ = 23208120. Its totient is φ = 21660856.

The previous prime is 22434479. The next prime is 22434491. The reversal of 22434487 is 78443422.

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

It is a cyclic number.

It is not a de Polignac number, because 22434487 - 2³ = 22434479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22434437) 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, 386773 + ... + 386830.

It is an arithmetic number, because the mean of its divisors is an integer number (5802030).

Almost surely, 2^22434487 is an apocalyptic number.

22434487 is a deficient number, since it is larger than the sum of its proper divisors (773633).

22434487 is an equidigital number, since it uses as much as digits as its factorization.

22434487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773632.

The product of its digits is 43008, while the sum is 34.

The square root of 22434487 is about 4736.5057795806. The cubic root of 22434487 is about 282.0365418837.

It can be divided in two parts, 2243 and 4487, that multiplied together give a triangular number (10064341 = T₄₄₈₆).

The spelling of 22434487 in words is "twenty-two million, four hundred thirty-four thousand, four hundred eighty-seven".