72049881 has 8 divisors (see below), whose sum is σ = 101122720. Its totient is φ = 45505152.

The previous prime is 72049871. The next prime is 72049889. The reversal of 72049881 is 18894027.

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

It is not a de Polignac number, because 72049881 - 2⁷ = 72049753 is a prime.

It is a super-2 number, since 2×72049881² = 10382370704228322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72049889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631960 + ... + 632073.

It is an arithmetic number, because the mean of its divisors is an integer number (12640340).

Almost surely, 2^72049881 is an apocalyptic number.

It is an amenable number.

72049881 is a deficient number, since it is larger than the sum of its proper divisors (29072839).

72049881 is a wasteful number, since it uses less digits than its factorization.

72049881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264055.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 72049881 is about 8488.2201314528. The cubic root of 72049881 is about 416.1128134158.

The spelling of 72049881 in words is "seventy-two million, forty-nine thousand, eight hundred eighty-one".