83428501 has 4 divisors (see below), whose sum is σ = 89846092. Its totient is φ = 77010912.

The previous prime is 83428493. The next prime is 83428517. The reversal of 83428501 is 10582438.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37527876 + 45900625 = 6126^2 + 6775^2 .

It is a cyclic number.

It is not a de Polignac number, because 83428501 - 2³ = 83428493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83428001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3208776 + ... + 3208801.

It is an arithmetic number, because the mean of its divisors is an integer number (22461523).

Almost surely, 2^83428501 is an apocalyptic number.

It is an amenable number.

83428501 is a deficient number, since it is larger than the sum of its proper divisors (6417591).

83428501 is a wasteful number, since it uses less digits than its factorization.

83428501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6417590.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 83428501 is about 9133.9203521818. The cubic root of 83428501 is about 436.9564423419.

The spelling of 83428501 in words is "eighty-three million, four hundred twenty-eight thousand, five hundred one".