78250299 has 4 divisors (see below), whose sum is σ = 104333736. Its totient is φ = 52166864.

The previous prime is 78250297. The next prime is 78250321. The reversal of 78250299 is 99205287.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99205287 = 3 ⋅33068429.

It is a cyclic number.

It is not a de Polignac number, because 78250299 - 2¹ = 78250297 is a prime.

It is a super-2 number, since 2×78250299² = 12246218587178802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78250299.

It is not an unprimeable number, because it can be changed into a prime (78250297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13041714 + ... + 13041719.

It is an arithmetic number, because the mean of its divisors is an integer number (26083434).

Almost surely, 2^78250299 is an apocalyptic number.

78250299 is a deficient number, since it is larger than the sum of its proper divisors (26083437).

78250299 is a wasteful number, since it uses less digits than its factorization.

78250299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26083436.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 78250299 is about 8845.9199069401. The cubic root of 78250299 is about 427.7224067584.

The spelling of 78250299 in words is "seventy-eight million, two hundred fifty thousand, two hundred ninety-nine".