74718140 has 36 divisors (see below), whose sum is σ = 182528136. Its totient is φ = 25617312.

The previous prime is 74718139. The next prime is 74718143. The reversal of 74718140 is 4181747.

It is a junction number, because it is equal to n+sod(n) for n = 74718097 and 74718106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74718143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37142 + ... + 39101.

It is an arithmetic number, because the mean of its divisors is an integer number (5070226).

Almost surely, 2^74718140 is an apocalyptic number.

74718140 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

74718140 is an abundant number, since it is smaller than the sum of its proper divisors (107809996).

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

74718140 is a wasteful number, since it uses less digits than its factorization.

74718140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76266 (or 76257 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 74718140 is about 8643.9655251511. The cubic root of 74718140 is about 421.1873807369.

Adding to 74718140 its reverse (4181747), we get a palindrome (78899887).

The spelling of 74718140 in words is "seventy-four million, seven hundred eighteen thousand, one hundred forty".