74233530 has 192 divisors, whose sum is σ = 239016960. Its totient is φ = 16329600.

The previous prime is 74233529. The next prime is 74233531. The reversal of 74233530 is 3533247.

It is an interprime number because it is at equal distance from previous prime (74233529) and next prime (74233531).

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 74233494 and 74233503.

It is not an unprimeable number, because it can be changed into a prime (74233531) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 410040 + ... + 410220.

It is an arithmetic number, because the mean of its divisors is an integer number (1244880).

Almost surely, 2^74233530 is an apocalyptic number.

74233530 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 74233530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119508480).

74233530 is an abundant number, since it is smaller than the sum of its proper divisors (164783430).

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

74233530 is a wasteful number, since it uses less digits than its factorization.

74233530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 27.

The square root of 74233530 is about 8615.8882304728. Note that the first 3 decimals coincide. The cubic root of 74233530 is about 420.2748201367.

Adding to 74233530 its reverse (3533247), we get a palindrome (77766777).

The spelling of 74233530 in words is "seventy-four million, two hundred thirty-three thousand, five hundred thirty".