72101879 has 8 divisors (see below), whose sum is σ = 76730400. Its totient is φ = 67516416.

The previous prime is 72101857. The next prime is 72101951. The reversal of 72101879 is 97810127.

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 72101879 - 2²⁰ = 71053303 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 (72101819) 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, 7274 + ... + 14039.

It is an arithmetic number, because the mean of its divisors is an integer number (9591300).

Almost surely, 2^72101879 is an apocalyptic number.

72101879 is a deficient number, since it is larger than the sum of its proper divisors (4628521).

72101879 is a wasteful number, since it uses less digits than its factorization.

72101879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21529.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 72101879 is about 8491.2825297478. The cubic root of 72101879 is about 416.2128914485.

The spelling of 72101879 in words is "seventy-two million, one hundred one thousand, eight hundred seventy-nine".