1672323540 has 96 divisors (see below), whose sum is σ = 4775694336. Its totient is φ = 437130240.

The previous prime is 1672323533. The next prime is 1672323571. The reversal of 1672323540 is 453232761.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1401184 + ... + 1402376.

It is an arithmetic number, because the mean of its divisors is an integer number (49746816).

Almost surely, 2^1672323540 is an apocalyptic number.

1672323540 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 1672323540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2387847168).

1672323540 is an abundant number, since it is smaller than the sum of its proper divisors (3103370796).

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

1672323540 is a wasteful number, since it uses less digits than its factorization.

1672323540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649 (or 1647 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 1672323540 is about 40894.0526238229. The cubic root of 1672323540 is about 1186.9709797261.

The spelling of 1672323540 in words is "one billion, six hundred seventy-two million, three hundred twenty-three thousand, five hundred forty".