22487148 has 18 divisors (see below), whose sum is σ = 56842604. Its totient is φ = 7495704.

The previous prime is 22487131. The next prime is 22487161. The reversal of 22487148 is 84178422.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 624643 = 22487148 / (2 + 2 + 4 + 8 + 7 + 1 + 4 + 8).

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 5 ways as a sum of consecutive naturals, for example, 312286 + ... + 312357.

Almost surely, 2^22487148 is an apocalyptic number.

It is an amenable number.

22487148 is an abundant number, since it is smaller than the sum of its proper divisors (34355456).

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

22487148 is a wasteful number, since it uses less digits than its factorization.

22487148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624653 (or 624648 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 22487148 is about 4742.0615769937. The cubic root of 22487148 is about 282.2570464487.

The spelling of 22487148 in words is "twenty-two million, four hundred eighty-seven thousand, one hundred forty-eight".