581073990 has 32 divisors (see below), whose sum is σ = 1593803520. Its totient is φ = 132816864.

The previous prime is 581073967. The next prime is 581074003. The reversal of 581073990 is 99370185.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1383300 + ... + 1383719.

It is an arithmetic number, because the mean of its divisors is an integer number (49806360).

Almost surely, 2^581073990 is an apocalyptic number.

581073990 is an abundant number, since it is smaller than the sum of its proper divisors (1012729530).

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

581073990 is a wasteful number, since it uses less digits than its factorization.

581073990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767036.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 581073990 is about 24105.4763487470. The cubic root of 581073990 is about 834.4695209448.

It can be divided in two parts, 5810 and 73990, that added together give a triangular number (79800 = T₃₉₉).

The spelling of 581073990 in words is "five hundred eighty-one million, seventy-three thousand, nine hundred ninety".