84530138 has 16 divisors (see below), whose sum is σ = 158082624. Its totient is φ = 32933760.

The previous prime is 84530093. The next prime is 84530141. The reversal of 84530138 is 83103548.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274295 + ... + 274602.

It is an arithmetic number, because the mean of its divisors is an integer number (9880164).

Almost surely, 2^84530138 is an apocalyptic number.

84530138 is a deficient number, since it is larger than the sum of its proper divisors (73552486).

84530138 is a wasteful number, since it uses less digits than its factorization.

84530138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548917.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 84530138 is about 9194.0273003728. The cubic root of 84530138 is about 438.8713117092.

The spelling of 84530138 in words is "eighty-four million, five hundred thirty thousand, one hundred thirty-eight".