73125978 has 16 divisors (see below), whose sum is σ = 147222336. Its totient is φ = 24213600.

The previous prime is 73125973. The next prime is 73125979. The reversal of 73125978 is 87952137.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73125971) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 39451 + ... + 41262.

It is an arithmetic number, because the mean of its divisors is an integer number (9201396).

Almost surely, 2^73125978 is an apocalyptic number.

73125978 is an abundant number, since it is smaller than the sum of its proper divisors (74096358).

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

73125978 is a wasteful number, since it uses less digits than its factorization.

73125978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80869.

The product of its digits is 105840, while the sum is 42.

The square root of 73125978 is about 8551.3728722352. The cubic root of 73125978 is about 418.1741946224.

The spelling of 73125978 in words is "seventy-three million, one hundred twenty-five thousand, nine hundred seventy-eight".