74476640 has 96 divisors (see below), whose sum is σ = 208111680. Its totient is φ = 24643584.

The previous prime is 74476639. The next prime is 74476651. The reversal of 74476640 is 4667447.

It is a junction number, because it is equal to n+sod(n) for n = 74476594 and 74476603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31334 + ... + 33626.

It is an arithmetic number, because the mean of its divisors is an integer number (2167830).

Almost surely, 2^74476640 is an apocalyptic number.

74476640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74476640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104055840).

74476640 is an abundant number, since it is smaller than the sum of its proper divisors (133635040).

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

74476640 is a wasteful number, since it uses less digits than its factorization.

74476640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344 (or 2336 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 38.

The square root of 74476640 is about 8629.9849362557. The cubic root of 74476640 is about 420.7331111424.

The spelling of 74476640 in words is "seventy-four million, four hundred seventy-six thousand, six hundred forty".