73400 has 24 divisors (see below), whose sum is σ = 171120. Its totient is φ = 29280.

The previous prime is 73387. The next prime is 73417. The reversal of 73400 is 437.

It is an Ulam number.

It is a nialpdrome in base 5.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17 + ... + 383.

It is an arithmetic number, because the mean of its divisors is an integer number (7130).

2⁷³⁴⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85560).

73400 is an abundant number, since it is smaller than the sum of its proper divisors (97720).

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

73400 is a wasteful number, since it uses less digits than its factorization.

73400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 73400 is about 270.9243436829. The cubic root of 73400 is about 41.8695879246.

Adding to 73400 its reverse (437), we get a palindrome (73837).

The spelling of 73400 in words is "seventy-three thousand, four hundred", and thus it is an iban number.