1672188720 has 80 divisors (see below), whose sum is σ = 5362558560. Its totient is φ = 430538752.

The previous prime is 1672188703. The next prime is 1672188737. The reversal of 1672188720 is 278812761.

It is an interprime number because it is at equal distance from previous prime (1672188703) and next prime (1672188737).

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113169 + ... + 127088.

It is an arithmetic number, because the mean of its divisors is an integer number (67031982).

Almost surely, 2^1672188720 is an apocalyptic number.

1672188720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1672188720 is an abundant number, since it is smaller than the sum of its proper divisors (3690369840).

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

1672188720 is a wasteful number, since it uses less digits than its factorization.

1672188720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240302 (or 240296 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 42.

The square root of 1672188720 is about 40892.4041846405. The cubic root of 1672188720 is about 1186.9390816465.

The spelling of 1672188720 in words is "one billion, six hundred seventy-two million, one hundred eighty-eight thousand, seven hundred twenty".