83278995 has 32 divisors (see below), whose sum is σ = 143700480. Its totient is φ = 41045760.

The previous prime is 83278961. The next prime is 83278997. The reversal of 83278995 is 59987238.

It is not a de Polignac number, because 83278995 - 2¹⁷ = 83147923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83278997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8122 + ... + 15248.

It is an arithmetic number, because the mean of its divisors is an integer number (4490640).

Almost surely, 2^83278995 is an apocalyptic number.

83278995 is a deficient number, since it is larger than the sum of its proper divisors (60421485).

83278995 is a wasteful number, since it uses less digits than its factorization.

83278995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7195.

The product of its digits is 1088640, while the sum is 51.

The square root of 83278995 is about 9125.7325733335. The cubic root of 83278995 is about 436.6952739126.

The spelling of 83278995 in words is "eighty-three million, two hundred seventy-eight thousand, nine hundred ninety-five".