1173200880 has 40 divisors (see below), whose sum is σ = 3636923472. Its totient is φ = 312853504.

The previous prime is 1173200879. The next prime is 1173200891. The reversal of 1173200880 is 880023711.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2443929 + ... + 2444408.

Almost surely, 2^1173200880 is an apocalyptic number.

1173200880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1173200880 is an abundant number, since it is smaller than the sum of its proper divisors (2463722592).

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

1173200880 is a wasteful number, since it uses less digits than its factorization.

1173200880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4888353 (or 4888347 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 1173200880 is about 34252.0200864124. The cubic root of 1173200880 is about 1054.6882961662.

The spelling of 1173200880 in words is "one billion, one hundred seventy-three million, two hundred thousand, eight hundred eighty".