73471990 has 8 divisors (see below), whose sum is σ = 132249600. Its totient is φ = 29388792.

The previous prime is 73471987. The next prime is 73471991. The reversal of 73471990 is 9917437.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73471991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3673590 + ... + 3673609.

It is an arithmetic number, because the mean of its divisors is an integer number (16531200).

Almost surely, 2^73471990 is an apocalyptic number.

73471990 is a deficient number, since it is larger than the sum of its proper divisors (58777610).

73471990 is a wasteful number, since it uses less digits than its factorization.

73471990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7347206.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 73471990 is about 8571.5803677035. The cubic root of 73471990 is about 418.8327187892.

The spelling of 73471990 in words is "seventy-three million, four hundred seventy-one thousand, nine hundred ninety".