83497728 has 144 divisors (see below), whose sum is σ = 241355520. Its totient is φ = 25546752.

The previous prime is 83497721. The next prime is 83497741. The reversal of 83497728 is 82779438.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (83497721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512175 + ... + 512337.

It is an arithmetic number, because the mean of its divisors is an integer number (1676080).

Almost surely, 2^83497728 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 83497728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120677760).

83497728 is an abundant number, since it is smaller than the sum of its proper divisors (157857792).

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

83497728 is a wasteful number, since it uses less digits than its factorization.

83497728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 220 counting only the distinct ones).

The product of its digits is 677376, while the sum is 48.

The square root of 83497728 is about 9137.7091220940. The cubic root of 83497728 is about 437.0772676412.

The spelling of 83497728 in words is "eighty-three million, four hundred ninety-seven thousand, seven hundred twenty-eight".