22977240 has 192 divisors, whose sum is σ = 82218240. Its totient is φ = 5091840.

The previous prime is 22977239. The next prime is 22977257. The reversal of 22977240 is 4277922.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 223029 + ... + 223131.

It is an arithmetic number, because the mean of its divisors is an integer number (428220).

Almost surely, 2^22977240 is an apocalyptic number.

22977240 is a gapful number since it is divisible by the number (20) 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 22977240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41109120).

22977240 is an abundant number, since it is smaller than the sum of its proper divisors (59241000).

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

22977240 is a wasteful number, since it uses less digits than its factorization.

22977240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 22977240 is about 4793.4580419568. The cubic root of 22977240 is about 284.2928606307.

The spelling of 22977240 in words is "twenty-two million, nine hundred seventy-seven thousand, two hundred forty".