74963890 has 32 divisors (see below), whose sum is σ = 141096960. Its totient is φ = 28641600.

The previous prime is 74963851. The next prime is 74963891. The reversal of 74963890 is 9836947.

74963890 is a nontrivial binomial coefficient, being equal to C(12245, 2).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 74963890.

It is not an unprimeable number, because it can be changed into a prime (74963891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22960 + ... + 26020.

It is an arithmetic number, because the mean of its divisors is an integer number (4409280).

Almost surely, 2^74963890 is an apocalyptic number.

74963890 is the 12244-th triangular number.

74963890 is the 4082-nd centered nonagonal number.

74963890 is a deficient number, since it is larger than the sum of its proper divisors (66133070).

74963890 is a wasteful number, since it uses less digits than its factorization.

74963890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 74963890 is about 8658.1689750201. The cubic root of 74963890 is about 421.6486410003.

The spelling of 74963890 in words is "seventy-four million, nine hundred sixty-three thousand, eight hundred ninety".