74040340 has 48 divisors (see below), whose sum is σ = 178557120. Its totient is φ = 25505280.

The previous prime is 74040331. The next prime is 74040347. The reversal of 74040340 is 4304047.

It is a super-3 number, since 3×74040340³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74040347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4677 + ... + 13036.

It is an arithmetic number, because the mean of its divisors is an integer number (3719940).

Almost surely, 2^74040340 is an apocalyptic number.

It is an amenable number.

74040340 is an abundant number, since it is smaller than the sum of its proper divisors (104516780).

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

74040340 is a wasteful number, since it uses less digits than its factorization.

74040340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17752 (or 17750 counting only the distinct ones).

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

The square root of 74040340 is about 8604.6696624565. The cubic root of 74040340 is about 419.9099202128.

Adding to 74040340 its reverse (4304047), we get a palindrome (78344387).

The spelling of 74040340 in words is "seventy-four million, forty thousand, three hundred forty".