22477494 has 64 divisors (see below), whose sum is σ = 52819200. Its totient is φ = 6314112.

The previous prime is 22477487. The next prime is 22477531. The reversal of 22477494 is 49477422.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42717 + ... + 43239.

It is an arithmetic number, because the mean of its divisors is an integer number (825300).

Almost surely, 2^22477494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22477494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26409600).

22477494 is an abundant number, since it is smaller than the sum of its proper divisors (30341706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22477494 is a wasteful number, since it uses less digits than its factorization.

22477494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589.

The product of its digits is 112896, while the sum is 39.

The square root of 22477494 is about 4741.0435560117. The cubic root of 22477494 is about 282.2166485651.

The spelling of 22477494 in words is "twenty-two million, four hundred seventy-seven thousand, four hundred ninety-four".