72840654 has 16 divisors (see below), whose sum is σ = 161868240. Its totient is φ = 24280200.

The previous prime is 72840643. The next prime is 72840659. The reversal of 72840654 is 45604827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72840659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674397 + ... + 674504.

It is an arithmetic number, because the mean of its divisors is an integer number (10116765).

Almost surely, 2^72840654 is an apocalyptic number.

72840654 is an abundant number, since it is smaller than the sum of its proper divisors (89027586).

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

72840654 is a wasteful number, since it uses less digits than its factorization.

72840654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348912 (or 1348906 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 72840654 is about 8534.6736317214. The cubic root of 72840654 is about 417.6296063367.

The spelling of 72840654 in words is "seventy-two million, eight hundred forty thousand, six hundred fifty-four".