74702250 has 320 divisors, whose sum is σ = 260941824. Its totient is φ = 15552000.

The previous prime is 74702237. The next prime is 74702261. The reversal of 74702250 is 5220747.

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 159 ways as a sum of consecutive naturals, for example, 2409735 + ... + 2409765.

Almost surely, 2^74702250 is an apocalyptic number.

74702250 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 74702250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130470912).

74702250 is an abundant number, since it is smaller than the sum of its proper divisors (186239574).

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

74702250 is a wasteful number, since it uses less digits than its factorization.

74702250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 74702250 is about 8643.0463379528. The cubic root of 74702250 is about 421.1575212232.

Adding to 74702250 its reverse (5220747), we get a palindrome (79922997).

The spelling of 74702250 in words is "seventy-four million, seven hundred two thousand, two hundred fifty".