73402638 has 8 divisors (see below), whose sum is σ = 146805288. Its totient is φ = 24467544.

The previous prime is 73402633. The next prime is 73402657. The reversal of 73402638 is 83620437.

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

73402638 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 73402599 and 73402608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73402633) 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, 6116881 + ... + 6116892.

It is an arithmetic number, because the mean of its divisors is an integer number (18350661).

Almost surely, 2^73402638 is an apocalyptic number.

73402638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

73402638 is a wasteful number, since it uses less digits than its factorization.

73402638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12233778.

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

The square root of 73402638 is about 8567.5339509103. The cubic root of 73402638 is about 418.7008951701.

The spelling of 73402638 in words is "seventy-three million, four hundred two thousand, six hundred thirty-eight".