84268138 has 8 divisors (see below), whose sum is σ = 127654020. Its totient is φ = 41716800.

The previous prime is 84268087. The next prime is 84268139. The reversal of 84268138 is 83186248.

It can be written as a sum of positive squares in 2 ways, for example, as 61199329 + 23068809 = 7823^2 + 4803^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×84268138² = 14202238163974088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84268138.

It is not an unprimeable number, because it can be changed into a prime (84268139) 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, 208383 + ... + 208786.

Almost surely, 2^84268138 is an apocalyptic number.

84268138 is a deficient number, since it is larger than the sum of its proper divisors (43385882).

84268138 is a wasteful number, since it uses less digits than its factorization.

84268138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417272.

The product of its digits is 73728, while the sum is 40.

The square root of 84268138 is about 9179.7678619887. The cubic root of 84268138 is about 438.4174172412.

The spelling of 84268138 in words is "eighty-four million, two hundred sixty-eight thousand, one hundred thirty-eight".