72843690 has 16 divisors (see below), whose sum is σ = 174824928. Its totient is φ = 19424976.

The previous prime is 72843671. The next prime is 72843721. The reversal of 72843690 is 9634827.

It is a super-2 number, since 2×72843690² = 10612406345632200, which contains 22 as substring.

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, 1214032 + ... + 1214091.

It is an arithmetic number, because the mean of its divisors is an integer number (10926558).

Almost surely, 2^72843690 is an apocalyptic number.

72843690 is an abundant number, since it is smaller than the sum of its proper divisors (101981238).

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

72843690 is a wasteful number, since it uses less digits than its factorization.

72843690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428133.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 72843690 is about 8534.8514925569. The cubic root of 72843690 is about 417.6354085264.

The spelling of 72843690 in words is "seventy-two million, eight hundred forty-three thousand, six hundred ninety".