78298249830 has 32 divisors (see below), whose sum is σ = 187970406624. Its totient is φ = 20873465856.

The previous prime is 78298249829. The next prime is 78298249831. The reversal of 78298249830 is 3894289287.

It is an interprime number because it is at equal distance from previous prime (78298249829) and next prime (78298249831).

It is a super-2 number, since 2×78298249830² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78298249831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273777 + ... + 481196.

It is an arithmetic number, because the mean of its divisors is an integer number (5874075207).

Almost surely, 2^78298249830 is an apocalyptic number.

78298249830 is an abundant number, since it is smaller than the sum of its proper divisors (109672156794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78298249830 is a wasteful number, since it uses less digits than its factorization.

78298249830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758440.

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 78298249830 in words is "seventy-eight billion, two hundred ninety-eight million, two hundred forty-nine thousand, eight hundred thirty".