73638374 has 4 divisors (see below), whose sum is σ = 110457564. Its totient is φ = 36819186.

The previous prime is 73638353. The next prime is 73638377. The reversal of 73638374 is 47383637.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×73638374² = 10845220250727752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73638377) by changing a digit.

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 as a sum of consecutive naturals, namely, 18409592 + ... + 18409595.

It is an arithmetic number, because the mean of its divisors is an integer number (27614391).

Almost surely, 2^73638374 is an apocalyptic number.

73638374 is a deficient number, since it is larger than the sum of its proper divisors (36819190).

73638374 is a wasteful number, since it uses less digits than its factorization.

73638374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36819189.

The product of its digits is 254016, while the sum is 41.

The square root of 73638374 is about 8581.2804405869. The cubic root of 73638374 is about 419.1486420181.

The spelling of 73638374 in words is "seventy-three million, six hundred thirty-eight thousand, three hundred seventy-four".