22478976 has 192 divisors, whose sum is σ = 74256000. Its totient is φ = 6469632.

The previous prime is 22478971. The next prime is 22478987. The reversal of 22478976 is 67987422.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22478971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 284505 + ... + 284583.

It is an arithmetic number, because the mean of its divisors is an integer number (386750).

Almost surely, 2^22478976 is an apocalyptic number.

22478976 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 22478976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37128000).

22478976 is an abundant number, since it is smaller than the sum of its proper divisors (51777024).

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

22478976 is a wasteful number, since it uses less digits than its factorization.

22478976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 116 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 22478976 is about 4741.1998481397. The cubic root of 22478976 is about 282.2228508562. Note that the first 3 decimals are identical.

The spelling of 22478976 in words is "twenty-two million, four hundred seventy-eight thousand, nine hundred seventy-six".