73001990 has 32 divisors (see below), whose sum is σ = 143100000. Its totient is φ = 26707968.

The previous prime is 73001989. The next prime is 73002031. The reversal of 73001990 is 9910037.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1115 + ... + 12134.

It is an arithmetic number, because the mean of its divisors is an integer number (4471875).

Almost surely, 2^73001990 is an apocalyptic number.

73001990 is a deficient number, since it is larger than the sum of its proper divisors (70098010).

73001990 is a wasteful number, since it uses less digits than its factorization.

73001990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13304.

The product of its (nonzero) digits is 1701, while the sum is 29.

The square root of 73001990 is about 8544.1202004653. The cubic root of 73001990 is about 417.9377172680.

The spelling of 73001990 in words is "seventy-three million, one thousand, nine hundred ninety".