78300494 has 4 divisors (see below), whose sum is σ = 117450744. Its totient is φ = 39150246.

The previous prime is 78300491. The next prime is 78300503. The reversal of 78300494 is 49400387.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49400387 = 2857 ⋅17291.

It is a super-2 number, since 2×78300494² = 12261934721288072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78300491) by changing a digit.

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 as a sum of consecutive naturals, namely, 19575122 + ... + 19575125.

It is an arithmetic number, because the mean of its divisors is an integer number (29362686).

Almost surely, 2^78300494 is an apocalyptic number.

78300494 is a deficient number, since it is larger than the sum of its proper divisors (39150250).

78300494 is a wasteful number, since it uses less digits than its factorization.

78300494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39150249.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 78300494 is about 8848.7566358218. The cubic root of 78300494 is about 427.8138438411.

The spelling of 78300494 in words is "seventy-eight million, three hundred thousand, four hundred ninety-four".