73178972 has 12 divisors (see below), whose sum is σ = 132194496. Its totient is φ = 35409120.

The previous prime is 73178971. The next prime is 73178983. The reversal of 73178972 is 27987137.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73178971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294953 + ... + 295200.

It is an arithmetic number, because the mean of its divisors is an integer number (11016208).

Almost surely, 2^73178972 is an apocalyptic number.

It is an amenable number.

73178972 is a deficient number, since it is larger than the sum of its proper divisors (59015524).

73178972 is a wasteful number, since it uses less digits than its factorization.

73178972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590188 (or 590186 counting only the distinct ones).

The product of its digits is 148176, while the sum is 44.

The square root of 73178972 is about 8554.4708778509. The cubic root of 73178972 is about 418.2751864212.

The spelling of 73178972 in words is "seventy-three million, one hundred seventy-eight thousand, nine hundred seventy-two".