78053828 has 6 divisors (see below), whose sum is σ = 136594206. Its totient is φ = 39026912.

The previous prime is 78053827. The next prime is 78053839. The reversal of 78053828 is 82835087.

It can be written as a sum of positive squares in only one way, i.e., 46895104 + 31158724 = 6848^2 + 5582^2 .

It is not an unprimeable number, because it can be changed into a prime (78053827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9756725 + ... + 9756732.

It is an arithmetic number, because the mean of its divisors is an integer number (22765701).

Almost surely, 2^78053828 is an apocalyptic number.

It is an amenable number.

78053828 is a deficient number, since it is larger than the sum of its proper divisors (58540378).

78053828 is a wasteful number, since it uses less digits than its factorization.

78053828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19513461 (or 19513459 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 78053828 is about 8834.8077511624. The cubic root of 78053828 is about 427.3641313264.

The spelling of 78053828 in words is "seventy-eight million, fifty-three thousand, eight hundred twenty-eight".