1157440332 has 24 divisors (see below), whose sum is σ = 2766565872. Its totient is φ = 376403200.

The previous prime is 1157440307. The next prime is 1157440357. The reversal of 1157440332 is 2330447511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1157440307) and next prime (1157440357).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1157440332.

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, 1175769 + ... + 1176752.

It is an arithmetic number, because the mean of its divisors is an integer number (115273578).

Almost surely, 2^1157440332 is an apocalyptic number.

1157440332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1157440332 is an abundant number, since it is smaller than the sum of its proper divisors (1609125540).

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

1157440332 is a wasteful number, since it uses less digits than its factorization.

1157440332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352569 (or 2352567 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 1157440332 is about 34021.1747592584. The cubic root of 1157440332 is about 1049.9441639243.

Adding to 1157440332 its reverse (2330447511), we get a palindrome (3487887843).

It can be divided in two parts, 115 and 7440332, that added together give a palindrome (7440447).

The spelling of 1157440332 in words is "one billion, one hundred fifty-seven million, four hundred forty thousand, three hundred thirty-two".