78738297 has 8 divisors (see below), whose sum is σ = 114528480. Its totient is φ = 47720160.

The previous prime is 78738293. The next prime is 78738307. The reversal of 78738297 is 79283787.

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

It is not a de Polignac number, because 78738297 - 2² = 78738293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78738293) 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, 1192972 + ... + 1193037.

It is an arithmetic number, because the mean of its divisors is an integer number (14316060).

Almost surely, 2^78738297 is an apocalyptic number.

It is an amenable number.

78738297 is a deficient number, since it is larger than the sum of its proper divisors (35790183).

78738297 is a wasteful number, since it uses less digits than its factorization.

78738297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386023.

The product of its digits is 1185408, while the sum is 51.

The square root of 78738297 is about 8873.4602608002. The cubic root of 78738297 is about 428.6097101836.

Subtracting 78738297 from its reverse (79283787), we obtain a triangular number (545490 = T₁₀₄₄).

The spelling of 78738297 in words is "seventy-eight million, seven hundred thirty-eight thousand, two hundred ninety-seven".