22551480 has 256 divisors, whose sum is σ = 91008000. Its totient is φ = 4852224.

The previous prime is 22551467. The next prime is 22551491. The reversal of 22551480 is 8415522.

22551480 = T₂₁₁ + T₂₁₂ + ... + T₅₂₄.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 143562 + ... + 143718.

It is an arithmetic number, because the mean of its divisors is an integer number (355500).

Almost surely, 2^22551480 is an apocalyptic number.

22551480 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 22551480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45504000).

22551480 is an abundant number, since it is smaller than the sum of its proper divisors (68456520).

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

22551480 is a wasteful number, since it uses less digits than its factorization.

22551480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 22551480 is about 4748.8398583233. The cubic root of 22551480 is about 282.5259537071.

The spelling of 22551480 in words is "twenty-two million, five hundred fifty-one thousand, four hundred eighty".