78052140 has 48 divisors (see below), whose sum is σ = 242830560. Its totient is φ = 20813760.

The previous prime is 78052127. The next prime is 78052157. The reversal of 78052140 is 4125087.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71731 + ... + 72810.

It is an arithmetic number, because the mean of its divisors is an integer number (5058970).

Almost surely, 2^78052140 is an apocalyptic number.

It is an amenable number.

78052140 is an abundant number, since it is smaller than the sum of its proper divisors (164778420).

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

78052140 is a wasteful number, since it uses less digits than its factorization.

78052140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144559 (or 144551 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 78052140 is about 8834.7122194218. The cubic root of 78052140 is about 427.3610505642.

The spelling of 78052140 in words is "seventy-eight million, fifty-two thousand, one hundred forty".