84928481 has 16 divisors (see below), whose sum is σ = 98480448. Its totient is φ = 72384000.

The previous prime is 84928453. The next prime is 84928511. The reversal of 84928481 is 18482948.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84928481 is a prime.

It is a super-2 number, since 2×84928481² = 14425693769934722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84928451) 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, 57806 + ... + 59256.

It is an arithmetic number, because the mean of its divisors is an integer number (6155028).

Almost surely, 2^84928481 is an apocalyptic number.

84928481 is the 5321-st octagonal number.

It is an amenable number.

84928481 is a deficient number, since it is larger than the sum of its proper divisors (13551967).

84928481 is a wasteful number, since it uses less digits than its factorization.

84928481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792.

The product of its digits is 147456, while the sum is 44.

The square root of 84928481 is about 9215.6649787197. The cubic root of 84928481 is about 439.5596161973.

The spelling of 84928481 in words is "eighty-four million, nine hundred twenty-eight thousand, four hundred eighty-one".