74036540 has 96 divisors (see below), whose sum is σ = 175633920. Its totient is φ = 26078976.

The previous prime is 74036539. The next prime is 74036551. The reversal of 74036540 is 4563047.

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, 375722 + ... + 375918.

It is an arithmetic number, because the mean of its divisors is an integer number (1829520).

Almost surely, 2^74036540 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 74036540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87816960).

74036540 is an abundant number, since it is smaller than the sum of its proper divisors (101597380).

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

74036540 is a wasteful number, since it uses less digits than its factorization.

74036540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 74036540 is about 8604.4488492872. The cubic root of 74036540 is about 419.9027363587.

Adding to 74036540 its reverse (4563047), we get a palindrome (78599587).

The spelling of 74036540 in words is "seventy-four million, thirty-six thousand, five hundred forty".