74590020 has 36 divisors (see below), whose sum is σ = 226256940. Its totient is φ = 19890624.

The previous prime is 74590003. The next prime is 74590031. The reversal of 74590020 is 2009547.

74590020 is a `hidden beast` number, since 74 + 590 + 0 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18249984 + 56340036 = 4272^2 + 7506^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 207015 + ... + 207374.

It is an arithmetic number, because the mean of its divisors is an integer number (6284915).

Almost surely, 2^74590020 is an apocalyptic number.

It is an amenable number.

74590020 is an abundant number, since it is smaller than the sum of its proper divisors (151666920).

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

74590020 is a wasteful number, since it uses less digits than its factorization.

74590020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414404 (or 414399 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 74590020 is about 8636.5513950882. The cubic root of 74590020 is about 420.9465048264.

Adding to 74590020 its reverse (2009547), we get a palindrome (76599567).

The spelling of 74590020 in words is "seventy-four million, five hundred ninety thousand, twenty".