2215534464 has 256 divisors, whose sum is σ = 7683782400. Its totient is φ = 619591680.

The previous prime is 2215534459. The next prime is 2215534499. The reversal of 2215534464 is 4644355122.

2215534464 is a `hidden beast` number, since 2 + 2 + 1 + 553 + 44 + 64 = 666.

It is a super-2 number, since 2×2215534464² = 9817185922343534592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491967 + ... + 496449.

It is an arithmetic number, because the mean of its divisors is an integer number (30014775).

Almost surely, 2^2215534464 is an apocalyptic number.

2215534464 is a gapful number since it is divisible by the number (24) 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 2215534464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3841891200).

2215534464 is an abundant number, since it is smaller than the sum of its proper divisors (5468247936).

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

2215534464 is a wasteful number, since it uses less digits than its factorization.

2215534464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4530 (or 4512 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 2215534464 is about 47069.4642416928. The cubic root of 2215534464 is about 1303.6454805508.

Adding to 2215534464 its reverse (4644355122), we get a palindrome (6859889586).

The spelling of 2215534464 in words is "two billion, two hundred fifteen million, five hundred thirty-four thousand, four hundred sixty-four".