72840527 has 8 divisors (see below), whose sum is σ = 74214000. Its totient is φ = 71472960.

The previous prime is 72840499. The next prime is 72840541. The reversal of 72840527 is 72504827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72840527 - 2⁶ = 72840463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72840127) 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, 29243 + ... + 31635.

It is an arithmetic number, because the mean of its divisors is an integer number (9276750).

Almost surely, 2^72840527 is an apocalyptic number.

72840527 is a deficient number, since it is larger than the sum of its proper divisors (1373473).

72840527 is a wasteful number, since it uses less digits than its factorization.

72840527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2953.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 72840527 is about 8534.6661914805. Note that the first 3 decimals coincide. The cubic root of 72840527 is about 417.6293636197.

The spelling of 72840527 in words is "seventy-two million, eight hundred forty thousand, five hundred twenty-seven".