22157154 has 96 divisors (see below), whose sum is σ = 55486080. Its totient is φ = 6345216.

The previous prime is 22157143. The next prime is 22157167. The reversal of 22157154 is 45175122.

22157154 = 502² + 503² + ... + 577².

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 215067 + ... + 215169.

It is an arithmetic number, because the mean of its divisors is an integer number (577980).

Almost surely, 2^22157154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22157154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27743040).

22157154 is an abundant number, since it is smaller than the sum of its proper divisors (33328926).

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

22157154 is a wasteful number, since it uses less digits than its factorization.

22157154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 181 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 22157154 is about 4707.1386212858. The cubic root of 22157154 is about 280.8695501862.

It can be divided in two parts, 221 and 57154, that added together give a palindrome (57375).

The spelling of 22157154 in words is "twenty-two million, one hundred fifty-seven thousand, one hundred fifty-four".