78299616 has 24 divisors (see below), whose sum is σ = 205536744. Its totient is φ = 26099840.

The previous prime is 78299609. The next prime is 78299629. The reversal of 78299616 is 61699287.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×78299616³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

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, 407715 + ... + 407906.

It is an arithmetic number, because the mean of its divisors is an integer number (8564031).

Almost surely, 2^78299616 is an apocalyptic number.

It is an amenable number.

78299616 is an abundant number, since it is smaller than the sum of its proper divisors (127237128).

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

78299616 is a wasteful number, since it uses less digits than its factorization.

78299616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815634 (or 815626 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 78299616 is about 8848.7070241929. The cubic root of 78299616 is about 427.8122447794.

The spelling of 78299616 in words is "seventy-eight million, two hundred ninety-nine thousand, six hundred sixteen".