74340040 has 32 divisors (see below), whose sum is σ = 168930360. Its totient is φ = 29440000.

The previous prime is 74340037. The next prime is 74340073. The reversal of 74340040 is 4004347.

It can be written as a sum of positive squares in 4 ways, for example, as 71537764 + 2802276 = 8458^2 + 1674^2 .

It is a junction number, because it is equal to n+sod(n) for n = 74339993 and 74340020.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5161 + ... + 13240.

Almost surely, 2^74340040 is an apocalyptic number.

It is an amenable number.

74340040 is an abundant number, since it is smaller than the sum of its proper divisors (94590320).

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

74340040 is a wasteful number, since it uses less digits than its factorization.

74340040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18513 (or 18509 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 74340040 is about 8622.0670375496. The cubic root of 74340040 is about 420.4757270105.

Adding to 74340040 its reverse (4004347), we get a palindrome (78344387).

The spelling of 74340040 in words is "seventy-four million, three hundred forty thousand, forty".