1157775240 has 32 divisors (see below), whose sum is σ = 3473326080. Its totient is φ = 308740032.

The previous prime is 1157775233. The next prime is 1157775253. The reversal of 1157775240 is 425777511.

It is a happy 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, 4823944 + ... + 4824183.

It is an arithmetic number, because the mean of its divisors is an integer number (108541440).

Almost surely, 2^1157775240 is an apocalyptic number.

1157775240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157775240 is an abundant number, since it is smaller than the sum of its proper divisors (2315550840).

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

1157775240 is a wasteful number, since it uses less digits than its factorization.

1157775240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9648141 (or 9648137 counting only the distinct ones).

The product of its (nonzero) digits is 68600, while the sum is 39.

The square root of 1157775240 is about 34026.0964555148. The cubic root of 1157775240 is about 1050.0454220713.

The spelling of 1157775240 in words is "one billion, one hundred fifty-seven million, seven hundred seventy-five thousand, two hundred forty".