74309400 has 288 divisors, whose sum is σ = 284356800. Its totient is φ = 17884800.

The previous prime is 74309383. The next prime is 74309479. The reversal of 74309400 is 490347.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 534531 + ... + 534669.

It is an arithmetic number, because the mean of its divisors is an integer number (987350).

Almost surely, 2^74309400 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 74309400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142178400).

74309400 is an abundant number, since it is smaller than the sum of its proper divisors (210047400).

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

74309400 is a wasteful number, since it uses less digits than its factorization.

74309400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 74309400 is about 8620.2900183230. The cubic root of 74309400 is about 420.4179512964.

Adding to 74309400 its reverse (490347), we get a palindrome (74799747).

The spelling of 74309400 in words is "seventy-four million, three hundred nine thousand, four hundred".