72078099 has 8 divisors (see below), whose sum is σ = 97320960. Its totient is φ = 47443656.

The previous prime is 72078091. The next prime is 72078121. The reversal of 72078099 is 99087027.

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

It is not a de Polignac number, because 72078099 - 2³ = 72078091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72078099.

It is not an unprimeable number, because it can be changed into a prime (72078091) 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, 151827 + ... + 152300.

It is an arithmetic number, because the mean of its divisors is an integer number (12165120).

Almost surely, 2^72078099 is an apocalyptic number.

72078099 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

72078099 is a deficient number, since it is larger than the sum of its proper divisors (25242861).

72078099 is a wasteful number, since it uses less digits than its factorization.

72078099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304209.

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 72078099 is about 8489.8821546592. The cubic root of 72078099 is about 416.1671292067.

The spelling of 72078099 in words is "seventy-two million, seventy-eight thousand, ninety-nine".