83428730 has 64 divisors (see below), whose sum is σ = 189326592. Its totient is φ = 25712640.

The previous prime is 83428721. The next prime is 83428757. The reversal of 83428730 is 3782438.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74132 + ... + 75248.

It is an arithmetic number, because the mean of its divisors is an integer number (2958228).

Almost surely, 2^83428730 is an apocalyptic number.

83428730 is an abundant number, since it is smaller than the sum of its proper divisors (105897862).

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

83428730 is a wasteful number, since it uses less digits than its factorization.

83428730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 83428730 is about 9133.9328878638. The cubic root of 83428730 is about 436.9568421370.

The spelling of 83428730 in words is "eighty-three million, four hundred twenty-eight thousand, seven hundred thirty".