73029978 has 32 divisors (see below), whose sum is σ = 185473920. Its totient is φ = 20865600.

The previous prime is 73029959. The next prime is 73029997. The reversal of 73029978 is 87992037.

It is an interprime number because it is at equal distance from previous prime (73029959) and next prime (73029997).

It is a Curzon 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, 96223 + ... + 96978.

It is an arithmetic number, because the mean of its divisors is an integer number (5796060).

Almost surely, 2^73029978 is an apocalyptic number.

73029978 is an abundant number, since it is smaller than the sum of its proper divisors (112443942).

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

73029978 is a wasteful number, since it uses less digits than its factorization.

73029978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193219 (or 193213 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 73029978 is about 8545.7578950026. The cubic root of 73029978 is about 417.9911210464.

The spelling of 73029978 in words is "seventy-three million, twenty-nine thousand, nine hundred seventy-eight".