73998078 has 32 divisors (see below), whose sum is σ = 184515840. Its totient is φ = 19220160.

The previous prime is 73998077. The next prime is 73998079. The reversal of 73998078 is 87089937.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (73998077) and next prime (73998079).

It is a self number, because there is not a number n which added to its sum of digits gives 73998078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73998077) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79623 + ... + 80546.

It is an arithmetic number, because the mean of its divisors is an integer number (5766120).

Almost surely, 2^73998078 is an apocalyptic number.

73998078 is an abundant number, since it is smaller than the sum of its proper divisors (110517762).

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

73998078 is a wasteful number, since it uses less digits than its factorization.

73998078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160192.

The product of its (nonzero) digits is 762048, while the sum is 51.

The square root of 73998078 is about 8602.2135523364. The cubic root of 73998078 is about 419.8300105734.

The spelling of 73998078 in words is "seventy-three million, nine hundred ninety-eight thousand, seventy-eight".