73045400 has 48 divisors (see below), whose sum is σ = 174438240. Its totient is φ = 28425600.

The previous prime is 73045391. The next prime is 73045409. The reversal of 73045400 is 454037.

It is an interprime number because it is at equal distance from previous prime (73045391) and next prime (73045409).

It is a super-2 number, since 2×73045400² = 10671260922320000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73045409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2465 + ... + 12335.

It is an arithmetic number, because the mean of its divisors is an integer number (3634130).

Almost surely, 2^73045400 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 73045400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87219120).

73045400 is an abundant number, since it is smaller than the sum of its proper divisors (101392840).

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

73045400 is a wasteful number, since it uses less digits than its factorization.

73045400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9924 (or 9915 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 73045400 is about 8546.6601664042. The cubic root of 73045400 is about 418.0205418657.

Adding to 73045400 its reverse (454037), we get a palindrome (73499437).

The spelling of 73045400 in words is "seventy-three million, forty-five thousand, four hundred".