1217148264 has 96 divisors (see below), whose sum is σ = 3365706240. Its totient is φ = 397267200.

The previous prime is 1217148253. The next prime is 1217148281. The reversal of 1217148264 is 4628417121.

It is a happy number.

1217148264 is a `hidden beast` number, since 1 + 2 + 171 + 482 + 6 + 4 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 920724 + ... + 922044.

It is an arithmetic number, because the mean of its divisors is an integer number (35059440).

Almost surely, 2^1217148264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1217148264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682853120).

1217148264 is an abundant number, since it is smaller than the sum of its proper divisors (2148557976).

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

1217148264 is a wasteful number, since it uses less digits than its factorization.

1217148264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591 (or 1584 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 1217148264 is about 34887.6520276157. The cubic root of 1217148264 is about 1067.6965219456.

The spelling of 1217148264 in words is "one billion, two hundred seventeen million, one hundred forty-eight thousand, two hundred sixty-four".