74018440 has 32 divisors (see below), whose sum is σ = 172287000. Its totient is φ = 28585984.

The previous prime is 74018429. The next prime is 74018449. The reversal of 74018440 is 4481047.

It can be written as a sum of positive squares in 4 ways, for example, as 35354916 + 38663524 = 5946^2 + 6218^2 .

It is a junction number, because it is equal to n+sod(n) for n = 74018399 and 74018408.

It is not an unprimeable number, because it can be changed into a prime (74018449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30745 + ... + 33064.

Almost surely, 2^74018440 is an apocalyptic number.

It is an amenable number.

74018440 is an abundant number, since it is smaller than the sum of its proper divisors (98268560).

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

74018440 is a wasteful number, since it uses less digits than its factorization.

74018440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63849 (or 63845 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 74018440 is about 8603.3970035097. The cubic root of 74018440 is about 419.8685151532.

Adding to 74018440 its reverse (4481047), we get a palindrome (78499487).

The spelling of 74018440 in words is "seventy-four million, eighteen thousand, four hundred forty".