78272835 has 8 divisors (see below), whose sum is σ = 125236560. Its totient is φ = 41745504.

The previous prime is 78272833. The next prime is 78272839. The reversal of 78272835 is 53827287.

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

It is not a de Polignac number, because 78272835 - 2¹ = 78272833 is a prime.

It is a super-2 number, since 2×78272835² = 12253273397874450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (78272833) 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, 2609080 + ... + 2609109.

It is an arithmetic number, because the mean of its divisors is an integer number (15654570).

Almost surely, 2^78272835 is an apocalyptic number.

78272835 is a deficient number, since it is larger than the sum of its proper divisors (46963725).

78272835 is a wasteful number, since it uses less digits than its factorization.

78272835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5218197.

The product of its digits is 188160, while the sum is 42.

The square root of 78272835 is about 8847.1936228388. The cubic root of 78272835 is about 427.7634640114.

The spelling of 78272835 in words is "seventy-eight million, two hundred seventy-two thousand, eight hundred thirty-five".