78741140 has 12 divisors (see below), whose sum is σ = 165356436. Its totient is φ = 31496448.

The previous prime is 78741139. The next prime is 78741181. The reversal of 78741140 is 4114787.

It can be written as a sum of positive squares in 2 ways, for example, as 18957316 + 59783824 = 4354^2 + 7732^2 .

It is a junction number, because it is equal to n+sod(n) for n = 78741097 and 78741106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1968509 + ... + 1968548.

It is an arithmetic number, because the mean of its divisors is an integer number (13779703).

Almost surely, 2^78741140 is an apocalyptic number.

It is an amenable number.

78741140 is an abundant number, since it is smaller than the sum of its proper divisors (86615296).

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

78741140 is a wasteful number, since it uses less digits than its factorization.

78741140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937066 (or 3937064 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 78741140 is about 8873.6204561611. The cubic root of 78741140 is about 428.6148687184.

The spelling of 78741140 in words is "seventy-eight million, seven hundred forty-one thousand, one hundred forty".