672090040 has 64 divisors (see below), whose sum is σ = 1630692000. Its totient is φ = 248463360.

The previous prime is 672090037. The next prime is 672090077. The reversal of 672090040 is 40090276.

It is a junction number, because it is equal to n+sod(n) for n = 672089990 and 672090008.

It is a congruent number.

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, 20376 + ... + 41944.

Almost surely, 2^672090040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672090040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (815346000).

672090040 is an abundant number, since it is smaller than the sum of its proper divisors (958601960).

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

672090040 is a wasteful number, since it uses less digits than its factorization.

672090040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21640 (or 21636 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 672090040 is about 25924.6994196654. The cubic root of 672090040 is about 875.9429464590.

The spelling of 672090040 in words is "six hundred seventy-two million, ninety thousand, forty".