1672312540 has 12 divisors (see below), whose sum is σ = 3511856376. Its totient is φ = 668925008.

The previous prime is 1672312529. The next prime is 1672312547. The reversal of 1672312540 is 452132761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672312547) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 41807794 + ... + 41807833.

It is an arithmetic number, because the mean of its divisors is an integer number (292654698).

Almost surely, 2^1672312540 is an apocalyptic number.

1672312540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1672312540 is an abundant number, since it is smaller than the sum of its proper divisors (1839543836).

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

1672312540 is a wasteful number, since it uses less digits than its factorization.

1672312540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83615636 (or 83615634 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1672312540 is about 40893.9181297170. The cubic root of 1672312540 is about 1186.9683772174.

The spelling of 1672312540 in words is "one billion, six hundred seventy-two million, three hundred twelve thousand, five hundred forty".