78744498 has 16 divisors (see below), whose sum is σ = 179987520. Its totient is φ = 22498416.

The previous prime is 78744487. The next prime is 78744509. The reversal of 78744498 is 89444787.

It is an interprime number because it is at equal distance from previous prime (78744487) and next prime (78744509).

It is a self number, because there is not a number n which added to its sum of digits gives 78744498.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 937393 + ... + 937476.

It is an arithmetic number, because the mean of its divisors is an integer number (11249220).

Almost surely, 2^78744498 is an apocalyptic number.

78744498 is an abundant number, since it is smaller than the sum of its proper divisors (101243022).

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

78744498 is a wasteful number, since it uses less digits than its factorization.

78744498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874881.

The product of its digits is 1806336, while the sum is 51.

The square root of 78744498 is about 8873.8096666539. The cubic root of 78744498 is about 428.6209615448.

The spelling of 78744498 in words is "seventy-eight million, seven hundred forty-four thousand, four hundred ninety-eight".