73811998 has 16 divisors (see below), whose sum is σ = 125511120. Its totient is φ = 32273856.

The previous prime is 73811993. The next prime is 73812029. The reversal of 73811998 is 89911837.

It is a super-2 number, since 2×73811998² = 10896422097504008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73811993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74215 + ... + 75202.

It is an arithmetic number, because the mean of its divisors is an integer number (7844445).

Almost surely, 2^73811998 is an apocalyptic number.

73811998 is a deficient number, since it is larger than the sum of its proper divisors (51699122).

73811998 is a wasteful number, since it uses less digits than its factorization.

73811998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149451.

The product of its digits is 108864, while the sum is 46.

The square root of 73811998 is about 8591.3909234768. The cubic root of 73811998 is about 419.4778052841.

The spelling of 73811998 in words is "seventy-three million, eight hundred eleven thousand, nine hundred ninety-eight".