78929488 has 40 divisors (see below), whose sum is σ = 167533920. Its totient is φ = 35725440.

The previous prime is 78929479. The next prime is 78929507. The reversal of 78929488 is 88492987.

78929488 = 287² + 288² + ... + 638².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47943 + ... + 49561.

It is an arithmetic number, because the mean of its divisors is an integer number (4188348).

Almost surely, 2^78929488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78929488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83766960).

78929488 is an abundant number, since it is smaller than the sum of its proper divisors (88604432).

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

78929488 is a wasteful number, since it uses less digits than its factorization.

78929488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1909 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 55.

The square root of 78929488 is about 8884.2269219105. The cubic root of 78929488 is about 428.9563440524.

It can be divided in two parts, 78 and 929488, that added together give a triangular number (929566 = T₁₃₆₃).

The spelling of 78929488 in words is "seventy-eight million, nine hundred twenty-nine thousand, four hundred eighty-eight".