1156506672 has 80 divisors (see below), whose sum is σ = 3109265280. Its totient is φ = 370116096.

The previous prime is 1156506667. The next prime is 1156506691. The reversal of 1156506672 is 2766056511.

It is a self number, because there is not a number n which added to its sum of digits gives 1156506672.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117028 + ... + 126524.

It is an arithmetic number, because the mean of its divisors is an integer number (38865816).

Almost surely, 2^1156506672 is an apocalyptic number.

1156506672 is a gapful number since it is divisible by the number (12) 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 1156506672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1554632640).

1156506672 is an abundant number, since it is smaller than the sum of its proper divisors (1952758608).

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

1156506672 is a wasteful number, since it uses less digits than its factorization.

1156506672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9610 (or 9604 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 1156506672 is about 34007.4502425571. The cubic root of 1156506672 is about 1049.6617722403.

The spelling of 1156506672 in words is "one billion, one hundred fifty-six million, five hundred six thousand, six hundred seventy-two".