72085340 has 24 divisors (see below), whose sum is σ = 151573632. Its totient is φ = 28797120.

The previous prime is 72085331. The next prime is 72085369. The reversal of 72085340 is 4358027.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18002 + ... + 21638.

It is an arithmetic number, because the mean of its divisors is an integer number (6315568).

Almost surely, 2^72085340 is an apocalyptic number.

It is an amenable number.

72085340 is an abundant number, since it is smaller than the sum of its proper divisors (79488292).

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

72085340 is a wasteful number, since it uses less digits than its factorization.

72085340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4637 (or 4635 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 72085340 is about 8490.3085927427. The cubic root of 72085340 is about 416.1810648558.

The spelling of 72085340 in words is "seventy-two million, eighty-five thousand, three hundred forty".