80783028 has 24 divisors (see below), whose sum is σ = 209437760. Its totient is φ = 26927640.

The previous prime is 80783023. The next prime is 80783029. The reversal of 80783028 is 82038708.

It is a super-2 number, since 2×80783028² = 13051795225697568, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 80782983 and 80783001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80783023) 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, 373888 + ... + 374103.

Almost surely, 2^80783028 is an apocalyptic number.

It is an amenable number.

80783028 is an abundant number, since it is smaller than the sum of its proper divisors (128654732).

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

80783028 is a wasteful number, since it uses less digits than its factorization.

80783028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748004 (or 747996 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 80783028 is about 8987.9379170086. The cubic root of 80783028 is about 432.2881950428.

The spelling of 80783028 in words is "eighty million, seven hundred eighty-three thousand, twenty-eight".