22457136 has 160 divisors (see below), whose sum is σ = 69370560. Its totient is φ = 6193152.

The previous prime is 22457129. The next prime is 22457147. The reversal of 22457136 is 63175422.

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, 307596 + ... + 307668.

It is an arithmetic number, because the mean of its divisors is an integer number (433566).

Almost surely, 2^22457136 is an apocalyptic number.

22457136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22457136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34685280).

22457136 is an abundant number, since it is smaller than the sum of its proper divisors (46913424).

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

22457136 is a wasteful number, since it uses less digits than its factorization.

22457136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 137 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 22457136 is about 4738.8960739818. The cubic root of 22457136 is about 282.1314210638.

The spelling of 22457136 in words is "twenty-two million, four hundred fifty-seven thousand, one hundred thirty-six".