78948129 has 32 divisors (see below), whose sum is σ = 117089280. Its totient is φ = 47009088.

The previous prime is 78948101. The next prime is 78948137. The reversal of 78948129 is 92184987.

It is not a de Polignac number, because 78948129 - 2¹¹ = 78946081 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78948139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 300052 + ... + 300314.

It is an arithmetic number, because the mean of its divisors is an integer number (3659040).

Almost surely, 2^78948129 is an apocalyptic number.

It is an amenable number.

78948129 is a deficient number, since it is larger than the sum of its proper divisors (38141151).

78948129 is a wasteful number, since it uses less digits than its factorization.

78948129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501.

The product of its digits is 290304, while the sum is 48.

The square root of 78948129 is about 8885.2759664515. The cubic root of 78948129 is about 428.9901106712.

The spelling of 78948129 in words is "seventy-eight million, nine hundred forty-eight thousand, one hundred twenty-nine".