83440028 has 12 divisors (see below), whose sum is σ = 166880112. Its totient is φ = 35760000.

The previous prime is 83439973. The next prime is 83440099. The reversal of 83440028 is 82004438.

83440028 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1489973 + ... + 1490028.

It is an arithmetic number, because the mean of its divisors is an integer number (13906676).

Almost surely, 2^83440028 is an apocalyptic number.

It is an amenable number.

83440028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

83440028 is a wasteful number, since it uses less digits than its factorization.

83440028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2980012 (or 2980010 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 83440028 is about 9134.5513299778. The cubic root of 83440028 is about 436.9765656207.

The spelling of 83440028 in words is "eighty-three million, four hundred forty thousand, twenty-eight".