1156652220 has 24 divisors (see below), whose sum is σ = 3238626384. Its totient is φ = 308440576.

The previous prime is 1156652209. The next prime is 1156652243. The reversal of 1156652220 is 222566511.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9638709 + ... + 9638828.

It is an arithmetic number, because the mean of its divisors is an integer number (134942766).

Almost surely, 2^1156652220 is an apocalyptic number.

1156652220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1156652220 is an abundant number, since it is smaller than the sum of its proper divisors (2081974164).

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

1156652220 is a wasteful number, since it uses less digits than its factorization.

1156652220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19277549 (or 19277547 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 1156652220 is about 34009.5901180829. The cubic root of 1156652220 is about 1049.7058041993.

The spelling of 1156652220 in words is "one billion, one hundred fifty-six million, six hundred fifty-two thousand, two hundred twenty".