73086990 has 16 divisors (see below), whose sum is σ = 175408848. Its totient is φ = 19489856.

The previous prime is 73086983. The next prime is 73086991. The reversal of 73086990 is 9968037.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73086991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218087 + ... + 1218146.

It is an arithmetic number, because the mean of its divisors is an integer number (10963053).

Almost surely, 2^73086990 is an apocalyptic number.

73086990 is an abundant number, since it is smaller than the sum of its proper divisors (102321858).

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

73086990 is a wasteful number, since it uses less digits than its factorization.

73086990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436243.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 73086990 is about 8549.0929343410. The cubic root of 73086990 is about 418.0998632000.

The spelling of 73086990 in words is "seventy-three million, eighty-six thousand, nine hundred ninety".