78273373 has 4 divisors (see below), whose sum is σ = 80093728. Its totient is φ = 76453020.

The previous prime is 78273367. The next prime is 78273379. The reversal of 78273373 is 37337287.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (78273367) and next prime (78273379).

It is a cyclic number.

It is not a de Polignac number, because 78273373 - 2¹³ = 78265181 is a prime.

It is a super-2 number, since 2×78273373² = 12253441841594258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78273379) 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, 910113 + ... + 910198.

It is an arithmetic number, because the mean of its divisors is an integer number (20023432).

Almost surely, 2^78273373 is an apocalyptic number.

It is an amenable number.

78273373 is a deficient number, since it is larger than the sum of its proper divisors (1820355).

78273373 is a wasteful number, since it uses less digits than its factorization.

78273373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820354.

The product of its digits is 148176, while the sum is 40.

The square root of 78273373 is about 8847.2240279084. The cubic root of 78273373 is about 427.7644440713.

The spelling of 78273373 in words is "seventy-eight million, two hundred seventy-three thousand, three hundred seventy-three".