115278029 has 4 divisors (see below), whose sum is σ = 115301184. Its totient is φ = 115254876.

The previous prime is 115278017. The next prime is 115278041. The reversal of 115278029 is 920872511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 920872511 = 13 ⋅70836347.

It is an interprime number because it is at equal distance from previous prime (115278017) and next prime (115278041).

It is a cyclic number.

It is not a de Polignac number, because 115278029 - 2⁴ = 115278013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 115278029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115278329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707 + ... + 15200.

It is an arithmetic number, because the mean of its divisors is an integer number (28825296).

Almost surely, 2^115278029 is an apocalyptic number.

It is an amenable number.

115278029 is a deficient number, since it is larger than the sum of its proper divisors (23155).

115278029 is an equidigital number, since it uses as much as digits as its factorization.

115278029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23154.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 115278029 is about 10736.7606381068. The cubic root of 115278029 is about 486.6859932172.

The spelling of 115278029 in words is "one hundred fifteen million, two hundred seventy-eight thousand, twenty-nine".