84731538 has 16 divisors (see below), whose sum is σ = 171785376. Its totient is φ = 27856800.

The previous prime is 84731531. The next prime is 84731557. The reversal of 84731538 is 83513748.

It is a super-3 number, since 3×84731538³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84731496 and 84731505.

It is not an unprimeable number, because it can be changed into a prime (84731531) 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, 96288 + ... + 97163.

It is an arithmetic number, because the mean of its divisors is an integer number (10736586).

Almost surely, 2^84731538 is an apocalyptic number.

84731538 is an abundant number, since it is smaller than the sum of its proper divisors (87053838).

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

84731538 is a wasteful number, since it uses less digits than its factorization.

84731538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193529.

The product of its digits is 80640, while the sum is 39.

The square root of 84731538 is about 9204.9735469473. The cubic root of 84731538 is about 439.2195842475.

It can be divided in two parts, 8473 and 1538, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 84731538 in words is "eighty-four million, seven hundred thirty-one thousand, five hundred thirty-eight".