83781276 has 24 divisors (see below), whose sum is σ = 196218624. Its totient is φ = 27822960.

The previous prime is 83781263. The next prime is 83781281. The reversal of 83781276 is 67218738.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9630 + ... + 16133.

It is an arithmetic number, because the mean of its divisors is an integer number (8175776).

Almost surely, 2^83781276 is an apocalyptic number.

It is an amenable number.

83781276 is an abundant number, since it is smaller than the sum of its proper divisors (112437348).

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

83781276 is a wasteful number, since it uses less digits than its factorization.

83781276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26041 (or 26039 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 83781276 is about 9153.2112397781. The cubic root of 83781276 is about 437.5714621769.

The spelling of 83781276 in words is "eighty-three million, seven hundred eighty-one thousand, two hundred seventy-six".