1172988628 has 24 divisors (see below), whose sum is σ = 2360034432. Its totient is φ = 499697184.

The previous prime is 1172988623. The next prime is 1172988647. The reversal of 1172988628 is 8268892711.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172988623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120751 + ... + 130102.

It is an arithmetic number, because the mean of its divisors is an integer number (98334768).

Almost surely, 2^1172988628 is an apocalyptic number.

It is an amenable number.

1172988628 is an abundant number, since it is smaller than the sum of its proper divisors (1187045804).

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

1172988628 is a wasteful number, since it uses less digits than its factorization.

1172988628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251031 (or 251029 counting only the distinct ones).

The product of its digits is 774144, while the sum is 52.

The square root of 1172988628 is about 34248.9215596637. The cubic root of 1172988628 is about 1054.6246886444.

The spelling of 1172988628 in words is "one billion, one hundred seventy-two million, nine hundred eighty-eight thousand, six hundred twenty-eight".