83278992 has 40 divisors (see below), whose sum is σ = 216254016. Its totient is φ = 27615616.

The previous prime is 83278961. The next prime is 83278997. The reversal of 83278992 is 29987238.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 5053 + ... + 13859.

Almost surely, 2^83278992 is an apocalyptic number.

It is an amenable number.

83278992 is an abundant number, since it is smaller than the sum of its proper divisors (132975024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83278992 is a wasteful number, since it uses less digits than its factorization.

83278992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9015 (or 9009 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 83278992 is about 9125.7324089631. The cubic root of 83278992 is about 436.6952686689.

The spelling of 83278992 in words is "eighty-three million, two hundred seventy-eight thousand, nine hundred ninety-two".