73378951 has 4 divisors (see below), whose sum is σ = 74091472. Its totient is φ = 72666432.

The previous prime is 73378939. The next prime is 73378973. The reversal of 73378951 is 15987337.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15987337 = 89 ⋅179633.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73378951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73378898 and 73378907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73378051) 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, 356106 + ... + 356311.

It is an arithmetic number, because the mean of its divisors is an integer number (18522868).

Almost surely, 2^73378951 is an apocalyptic number.

73378951 is a deficient number, since it is larger than the sum of its proper divisors (712521).

73378951 is a wasteful number, since it uses less digits than its factorization.

73378951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712520.

The product of its digits is 158760, while the sum is 43.

The square root of 73378951 is about 8566.1514695924. The cubic root of 73378951 is about 418.6558521245.

The spelling of 73378951 in words is "seventy-three million, three hundred seventy-eight thousand, nine hundred fifty-one".