1870728700 has 72 divisors (see below), whose sum is σ = 4129079472. Its totient is φ = 735559680.

The previous prime is 1870728679. The next prime is 1870728701. The reversal of 1870728700 is 78270781.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1870728701) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2132662 + ... + 2133538.

It is an arithmetic number, because the mean of its divisors is an integer number (57348326).

Almost surely, 2^1870728700 is an apocalyptic number.

1870728700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1870728700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2064539736).

1870728700 is an abundant number, since it is smaller than the sum of its proper divisors (2258350772).

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

1870728700 is a wasteful number, since it uses less digits than its factorization.

1870728700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 40.

The square root of 1870728700 is about 43251.9213446062. The cubic root of 1870728700 is about 1232.1689757758.

The spelling of 1870728700 in words is "one billion, eight hundred seventy million, seven hundred twenty-eight thousand, seven hundred".