78373838 has 8 divisors (see below), whose sum is σ = 117610920. Its totient is φ = 39170200.

The previous prime is 78373831. The next prime is 78373843. The reversal of 78373838 is 83837387.

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

It is a super-2 number, since 2×78373838² = 12284916965700488, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78373792 and 78373801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78373831) 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, 1313 + ... + 12588.

It is an arithmetic number, because the mean of its divisors is an integer number (14701365).

Almost surely, 2^78373838 is an apocalyptic number.

78373838 is a deficient number, since it is larger than the sum of its proper divisors (39237082).

78373838 is a wasteful number, since it uses less digits than its factorization.

78373838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16722.

The product of its digits is 677376, while the sum is 47.

The square root of 78373838 is about 8852.8999768437. The cubic root of 78373838 is about 427.9473797655.

The spelling of 78373838 in words is "seventy-eight million, three hundred seventy-three thousand, eight hundred thirty-eight".