73848138 has 64 divisors (see below), whose sum is σ = 187686912. Its totient is φ = 18843840.

The previous prime is 73848127. The next prime is 73848143. The reversal of 73848138 is 83184837.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 73848138.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14745 + ... + 19107.

It is an arithmetic number, because the mean of its divisors is an integer number (2932608).

Almost surely, 2^73848138 is an apocalyptic number.

73848138 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 73848138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93843456).

73848138 is an abundant number, since it is smaller than the sum of its proper divisors (113838774).

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

73848138 is a wasteful number, since it uses less digits than its factorization.

73848138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4419.

The product of its digits is 129024, while the sum is 42.

The square root of 73848138 is about 8593.4939343669. The cubic root of 73848138 is about 419.5462560092.

The spelling of 73848138 in words is "seventy-three million, eight hundred forty-eight thousand, one hundred thirty-eight".