22146488 has 64 divisors (see below), whose sum is σ = 52920000. Its totient is φ = 8451072.

The previous prime is 22146479. The next prime is 22146491. The reversal of 22146488 is 88464122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20588 + ... + 21636.

It is an arithmetic number, because the mean of its divisors is an integer number (826875).

Almost surely, 2^22146488 is an apocalyptic number.

22146488 is a gapful number since it is divisible by the number (28) 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 22146488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26460000).

22146488 is an abundant number, since it is smaller than the sum of its proper divisors (30773512).

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

22146488 is a wasteful number, since it uses less digits than its factorization.

22146488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104 (or 1100 counting only the distinct ones).

The product of its digits is 24576, while the sum is 35.

The square root of 22146488 is about 4706.0055248586. The cubic root of 22146488 is about 280.8244746702.

The spelling of 22146488 in words is "twenty-two million, one hundred forty-six thousand, four hundred eighty-eight".