73278651 has 8 divisors (see below), whose sum is σ = 98327824. Its totient is φ = 48540960.

The previous prime is 73278607. The next prime is 73278659. The reversal of 73278651 is 15687237.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73278651 - 2⁶ = 73278587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73278659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77320 + ... + 78261.

It is an arithmetic number, because the mean of its divisors is an integer number (12290978).

Almost surely, 2^73278651 is an apocalyptic number.

73278651 is a deficient number, since it is larger than the sum of its proper divisors (25049173).

73278651 is a wasteful number, since it uses less digits than its factorization.

73278651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155741.

The product of its digits is 70560, while the sum is 39.

The square root of 73278651 is about 8560.2950299625. The cubic root of 73278651 is about 418.4650147967.

The spelling of 73278651 in words is "seventy-three million, two hundred seventy-eight thousand, six hundred fifty-one".