74667840 has 224 divisors, whose sum is σ = 264907776. Its totient is φ = 17694720.

The previous prime is 74667833. The next prime is 74667869. The reversal of 74667840 is 4876647.

It is a junction number, because it is equal to n+sod(n) for n = 74667792 and 74667801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386784 + ... + 386976.

It is an arithmetic number, because the mean of its divisors is an integer number (1182624).

Almost surely, 2^74667840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74667840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132453888).

74667840 is an abundant number, since it is smaller than the sum of its proper divisors (190239936).

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

74667840 is a wasteful number, since it uses less digits than its factorization.

74667840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 74667840 is about 8641.0554910844. The cubic root of 74667840 is about 421.0928455451.

It can be divided in two parts, 746 and 67840, that added together give a palindrome (68586).

The spelling of 74667840 in words is "seventy-four million, six hundred sixty-seven thousand, eight hundred forty".