78272199 has 12 divisors (see below), whose sum is σ = 119710656. Its totient is φ = 49111872.

The previous prime is 78272087. The next prime is 78272203. The reversal of 78272199 is 99127287.

It is not a de Polignac number, because 78272199 - 2⁸ = 78271943 is a prime.

It is a super-2 number, since 2×78272199² = 12253074272591202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78273199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255639 + ... + 255944.

It is an arithmetic number, because the mean of its divisors is an integer number (9975888).

Almost surely, 2^78272199 is an apocalyptic number.

78272199 is a deficient number, since it is larger than the sum of its proper divisors (41438457).

78272199 is a wasteful number, since it uses less digits than its factorization.

78272199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511606 (or 511603 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 78272199 is about 8847.1576791645. The cubic root of 78272199 is about 427.7623054217.

The spelling of 78272199 in words is "seventy-eight million, two hundred seventy-two thousand, one hundred ninety-nine".