1172874280 has 16 divisors (see below), whose sum is σ = 2638967220. Its totient is φ = 469149696.

The previous prime is 1172874271. The next prime is 1172874293. The reversal of 1172874280 is 824782711.

It can be written as a sum of positive squares in 2 ways, for example, as 1154504484 + 18369796 = 33978^2 + 4286^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 29321857 = 1172874280 / (1 + 1 + 7 + 2 + 8 + 7 + 4 + 2 + 8 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14660889 + ... + 14660968.

Almost surely, 2^1172874280 is an apocalyptic number.

1172874280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1172874280 is an abundant number, since it is smaller than the sum of its proper divisors (1466092940).

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

1172874280 is a wasteful number, since it uses less digits than its factorization.

1172874280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29321868 (or 29321864 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 1172874280 is about 34247.2521525450. The cubic root of 1172874280 is about 1054.5904177402.

The spelling of 1172874280 in words is "one billion, one hundred seventy-two million, eight hundred seventy-four thousand, two hundred eighty".