73438134 has 64 divisors (see below), whose sum is σ = 187633152. Its totient is φ = 18604800.

The previous prime is 73438133. The next prime is 73438153. The reversal of 73438134 is 43183437.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 73438095 and 73438104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73438133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17004 + ... + 20880.

It is an arithmetic number, because the mean of its divisors is an integer number (2931768).

Almost surely, 2^73438134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73438134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93816576).

73438134 is an abundant number, since it is smaller than the sum of its proper divisors (114195018).

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

73438134 is a wasteful number, since it uses less digits than its factorization.

73438134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941.

The product of its digits is 24192, while the sum is 33.

The square root of 73438134 is about 8569.6052417833. The cubic root of 73438134 is about 418.7683759961.

The spelling of 73438134 in words is "seventy-three million, four hundred thirty-eight thousand, one hundred thirty-four".