78038434 has 8 divisors (see below), whose sum is σ = 123218640. Its totient is φ = 36965556.

The previous prime is 78038431. The next prime is 78038473. The reversal of 78038434 is 43483087.

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

It is a junction number, because it is equal to n+sod(n) for n = 78038393 and 78038402.

It is not an unprimeable number, because it can be changed into a prime (78038431) 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, 1026784 + ... + 1026859.

It is an arithmetic number, because the mean of its divisors is an integer number (15402330).

Almost surely, 2^78038434 is an apocalyptic number.

78038434 is a deficient number, since it is larger than the sum of its proper divisors (45180206).

78038434 is a wasteful number, since it uses less digits than its factorization.

78038434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053664.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 78038434 is about 8833.9364951306. The cubic root of 78038434 is about 427.3360341523.

The spelling of 78038434 in words is "seventy-eight million, thirty-eight thousand, four hundred thirty-four".