74730040 has 128 divisors (see below), whose sum is σ = 220838400. Its totient is φ = 22049280.

The previous prime is 74730037. The next prime is 74730041. The reversal of 74730040 is 4003747.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 74729987 and 74730014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74730041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57882 + ... + 59158.

It is an arithmetic number, because the mean of its divisors is an integer number (1725300).

Almost surely, 2^74730040 is an apocalyptic number.

74730040 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 74730040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110419200).

74730040 is an abundant number, since it is smaller than the sum of its proper divisors (146108360).

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

74730040 is a wasteful number, since it uses less digits than its factorization.

74730040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 74730040 is about 8644.6538392234. The cubic root of 74730040 is about 421.2097397150.

Adding to 74730040 its reverse (4003747), we get a palindrome (78733787).

The spelling of 74730040 in words is "seventy-four million, seven hundred thirty thousand, forty".