74945000 has 80 divisors (see below), whose sum is σ = 189267540. Its totient is φ = 27648000.

The previous prime is 74944997. The next prime is 74945051. The reversal of 74945000 is 54947.

It can be written as a sum of positive squares in 10 ways, for example, as 7606564 + 67338436 = 2758^2 + 8206^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 64424 + ... + 65576.

Almost surely, 2^74945000 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 74945000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94633770).

74945000 is an abundant number, since it is smaller than the sum of its proper divisors (114322540).

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

74945000 is a wasteful number, since it uses less digits than its factorization.

74945000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192 (or 1173 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 74945000 is about 8657.0780289888. The cubic root of 74945000 is about 421.6132212271.

Adding to 74945000 its reverse (54947), we get a palindrome (74999947).

The spelling of 74945000 in words is "seventy-four million, nine hundred forty-five thousand".