22742454 has 64 divisors (see below), whose sum is σ = 54577152. Its totient is φ = 6182400.

The previous prime is 22742453. The next prime is 22742471. The reversal of 22742454 is 45424722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22742453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80794 + ... + 81074.

It is an arithmetic number, because the mean of its divisors is an integer number (852768).

Almost surely, 2^22742454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22742454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27288576).

22742454 is an abundant number, since it is smaller than the sum of its proper divisors (31834698).

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

22742454 is a wasteful number, since it uses less digits than its factorization.

22742454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381.

The product of its digits is 17920, while the sum is 30.

The square root of 22742454 is about 4768.9049057409. The cubic root of 22742454 is about 283.3212233194.

The spelling of 22742454 in words is "twenty-two million, seven hundred forty-two thousand, four hundred fifty-four".