78491294 has 16 divisors (see below), whose sum is σ = 134701056. Its totient is φ = 33603000.

The previous prime is 78491239. The next prime is 78491359. The reversal of 78491294 is 49219487.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13679 + ... + 18549.

It is an arithmetic number, because the mean of its divisors is an integer number (8418816).

Almost surely, 2^78491294 is an apocalyptic number.

78491294 is a deficient number, since it is larger than the sum of its proper divisors (56209762).

78491294 is a wasteful number, since it uses less digits than its factorization.

78491294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6031.

The product of its digits is 145152, while the sum is 44.

The square root of 78491294 is about 8859.5312517085. The cubic root of 78491294 is about 428.1610560785.

The spelling of 78491294 in words is "seventy-eight million, four hundred ninety-one thousand, two hundred ninety-four".