23078155 has 8 divisors (see below), whose sum is σ = 27721584. Its totient is φ = 18444000.

The previous prime is 23078137. The next prime is 23078183. The reversal of 23078155 is 55187032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23078155 - 2⁵ = 23078123 is a prime.

It is a Duffinian 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, 5665 + ... + 8845.

It is an arithmetic number, because the mean of its divisors is an integer number (3465198).

Almost surely, 2^23078155 is an apocalyptic number.

23078155 is a deficient number, since it is larger than the sum of its proper divisors (4643429).

23078155 is a wasteful number, since it uses less digits than its factorization.

23078155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 23078155 is about 4803.9728350606. The cubic root of 23078155 is about 284.7084532685.

The spelling of 23078155 in words is "twenty-three million, seventy-eight thousand, one hundred fifty-five".