78057734 has 16 divisors (see below), whose sum is σ = 122245200. Its totient is φ = 37334304.

The previous prime is 78057713. The next prime is 78057739. The reversal of 78057734 is 43775087.

It is a junction number, because it is equal to n+sod(n) for n = 78057691 and 78057700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78057739) 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, 149 + ... + 12495.

It is an arithmetic number, because the mean of its divisors is an integer number (7640325).

Almost surely, 2^78057734 is an apocalyptic number.

78057734 is a deficient number, since it is larger than the sum of its proper divisors (44187466).

78057734 is a wasteful number, since it uses less digits than its factorization.

78057734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12487.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 78057734 is about 8835.0288058387. The cubic root of 78057734 is about 427.3712599815.

The spelling of 78057734 in words is "seventy-eight million, fifty-seven thousand, seven hundred thirty-four".