78514740 has 72 divisors (see below), whose sum is σ = 244618920. Its totient is φ = 20369664.

The previous prime is 78514727. The next prime is 78514741. The reversal of 78514740 is 4741587.

78514740 is a `hidden beast` number, since 78 + 514 + 74 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4485924 + 74028816 = 2118^2 + 8604^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 78514695 and 78514704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78514741) 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 23 ways as a sum of consecutive naturals, for example, 766 + ... + 12554.

It is an arithmetic number, because the mean of its divisors is an integer number (3397485).

Almost surely, 2^78514740 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 78514740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122309460).

78514740 is an abundant number, since it is smaller than the sum of its proper divisors (166104180).

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

78514740 is a wasteful number, since it uses less digits than its factorization.

78514740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11841 (or 11836 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 78514740 is about 8860.8543606133. The cubic root of 78514740 is about 428.2036835863.

The spelling of 78514740 in words is "seventy-eight million, five hundred fourteen thousand, seven hundred forty".