74152240 has 20 divisors (see below), whose sum is σ = 172404144. Its totient is φ = 29660864.

The previous prime is 74152237. The next prime is 74152241. The reversal of 74152240 is 4225147.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (74152241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463372 + ... + 463531.

Almost surely, 2^74152240 is an apocalyptic number.

It is an amenable number.

74152240 is an abundant number, since it is smaller than the sum of its proper divisors (98251904).

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

74152240 is a wasteful number, since it uses less digits than its factorization.

74152240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926916 (or 926910 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 74152240 is about 8611.1694908415. The cubic root of 74152240 is about 420.1213557104.

Adding to 74152240 its reverse (4225147), we get a palindrome (78377387).

The spelling of 74152240 in words is "seventy-four million, one hundred fifty-two thousand, two hundred forty".