78410838 has 64 divisors (see below), whose sum is σ = 179781120. Its totient is φ = 22579200.

The previous prime is 78410821. The next prime is 78410879. The reversal of 78410838 is 83801487.

It is a super-2 number, since 2×78410838² = 12296519031724488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78410796 and 78410805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135606 + ... + 136182.

It is an arithmetic number, because the mean of its divisors is an integer number (2809080).

Almost surely, 2^78410838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78410838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89890560).

78410838 is an abundant number, since it is smaller than the sum of its proper divisors (101370282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78410838 is a wasteful number, since it uses less digits than its factorization.

78410838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 78410838 is about 8854.9894409875. The cubic root of 78410838 is about 428.0147132974.

The spelling of 78410838 in words is "seventy-eight million, four hundred ten thousand, eight hundred thirty-eight".