22354947 has 10 divisors (see below), whose sum is σ = 33394548. Its totient is φ = 14903244.

The previous prime is 22354901. The next prime is 22354951. The reversal of 22354947 is 74945322.

It is not a de Polignac number, because 22354947 - 2¹⁰ = 22353923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22354957) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 137913 + ... + 138074.

Almost surely, 2^22354947 is an apocalyptic number.

22354947 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22354947 is a deficient number, since it is larger than the sum of its proper divisors (11039601).

22354947 is an equidigital number, since it uses as much as digits as its factorization.

22354947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275999 (or 275990 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 22354947 is about 4728.1018390047. The cubic root of 22354947 is about 281.7028331806.

The spelling of 22354947 in words is "twenty-two million, three hundred fifty-four thousand, nine hundred forty-seven".