74370240 has 504 divisors, whose sum is σ = 325233792. Its totient is φ = 15482880.

The previous prime is 74370227. The next prime is 74370251. The reversal of 74370240 is 4207347.

It is a tau number, because it is divible by the number of its divisors (504).

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, 2399025 + ... + 2399055.

Almost surely, 2^74370240 is an apocalyptic number.

74370240 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74370240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162616896).

74370240 is an abundant number, since it is smaller than the sum of its proper divisors (250863552).

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

74370240 is a wasteful number, since it uses less digits than its factorization.

74370240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 74370240 is about 8623.8181799015. The cubic root of 74370240 is about 420.5326575144.

Adding to 74370240 its reverse (4207347), we get a palindrome (78577587).

The spelling of 74370240 in words is "seventy-four million, three hundred seventy thousand, two hundred forty".