83278224 has 60 divisors (see below), whose sum is σ = 234526656. Its totient is φ = 27585216.

The previous prime is 83278213. The next prime is 83278249. The reversal of 83278224 is 42287238.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22317 + ... + 25779.

Almost surely, 2^83278224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83278224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117263328).

83278224 is an abundant number, since it is smaller than the sum of its proper divisors (151248432).

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

83278224 is a wasteful number, since it uses less digits than its factorization.

83278224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3644 (or 3635 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 83278224 is about 9125.6903300517. The cubic root of 83278224 is about 436.6939262615.

The spelling of 83278224 in words is "eighty-three million, two hundred seventy-eight thousand, two hundred twenty-four".