1187728750 has 40 divisors (see below), whose sum is σ = 2397563784. Its totient is φ = 438540000.

The previous prime is 1187728747. The next prime is 1187728769. The reversal of 1187728750 is 578277811.

It is a super-3 number, since 3×1187728750³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1187728750.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20296 + ... + 52795.

Almost surely, 2^1187728750 is an apocalyptic number.

1187728750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1187728750 is an abundant number, since it is smaller than the sum of its proper divisors (1209835034).

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

1187728750 is an equidigital number, since it uses as much as digits as its factorization.

1187728750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73126 (or 73111 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 46.

The square root of 1187728750 is about 34463.4407742466. The cubic root of 1187728750 is about 1059.0238878136.

The spelling of 1187728750 in words is "one billion, one hundred eighty-seven million, seven hundred twenty-eight thousand, seven hundred fifty".