78276340 has 24 divisors (see below), whose sum is σ = 168204960. Its totient is φ = 30582048.

The previous prime is 78276311. The next prime is 78276379. The reversal of 78276340 is 4367287.

It is a super-2 number, since 2×78276340² = 12254370807591200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78276340.

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, 44650 + ... + 46369.

It is an arithmetic number, because the mean of its divisors is an integer number (7008540).

Almost surely, 2^78276340 is an apocalyptic number.

It is an amenable number.

78276340 is an abundant number, since it is smaller than the sum of its proper divisors (89928620).

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

78276340 is a wasteful number, since it uses less digits than its factorization.

78276340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91071 (or 91069 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 78276340 is about 8847.3917060340. The cubic root of 78276340 is about 427.7698488938.

The spelling of 78276340 in words is "seventy-eight million, two hundred seventy-six thousand, three hundred forty".