2215237464 has 256 divisors, whose sum is σ = 6967296000. Its totient is φ = 646369920.

The previous prime is 2215237439. The next prime is 2215237469. The reversal of 2215237464 is 4647325122.

2215237464 is a `hidden beast` number, since 2 + 2 + 1 + 523 + 74 + 64 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215237469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9268657 + ... + 9268895.

It is an arithmetic number, because the mean of its divisors is an integer number (27216000).

Almost surely, 2^2215237464 is an apocalyptic number.

2215237464 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 2215237464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3483648000).

2215237464 is an abundant number, since it is smaller than the sum of its proper divisors (4752058536).

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

2215237464 is a wasteful number, since it uses less digits than its factorization.

2215237464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 385 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 2215237464 is about 47066.3092243273. The cubic root of 2215237464 is about 1303.5872252304.

The spelling of 2215237464 in words is "two billion, two hundred fifteen million, two hundred thirty-seven thousand, four hundred sixty-four".