28757955 has 8 divisors (see below), whose sum is σ = 46012752. Its totient is φ = 15337568.

The previous prime is 28757951. The next prime is 28757969. The reversal of 28757955 is 55975782.

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

It is a cyclic number.

It is not a de Polignac number, because 28757955 - 2² = 28757951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28757951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 958584 + ... + 958613.

It is an arithmetic number, because the mean of its divisors is an integer number (5751594).

Almost surely, 2^28757955 is an apocalyptic number.

28757955 is a deficient number, since it is larger than the sum of its proper divisors (17254797).

28757955 is a wasteful number, since it uses less digits than its factorization.

28757955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917205.

The product of its digits is 882000, while the sum is 48.

The square root of 28757955 is about 5362.6444036501. The cubic root of 28757955 is about 306.3745360507.

The spelling of 28757955 in words is "twenty-eight million, seven hundred fifty-seven thousand, nine hundred fifty-five".