28146551 has 8 divisors (see below), whose sum is σ = 28875744. Its totient is φ = 27424800.

The previous prime is 28146539. The next prime is 28146571. The reversal of 28146551 is 15564182.

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 28146551 - 2⁶ = 28146487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28146571) 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, 6245 + ... + 9761.

It is an arithmetic number, because the mean of its divisors is an integer number (3609468).

Almost surely, 2^28146551 is an apocalyptic number.

28146551 is a deficient number, since it is larger than the sum of its proper divisors (729193).

28146551 is a wasteful number, since it uses less digits than its factorization.

28146551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721.

The product of its digits is 9600, while the sum is 32.

The square root of 28146551 is about 5305.3323175839. The cubic root of 28146551 is about 304.1877555237.

The spelling of 28146551 in words is "twenty-eight million, one hundred forty-six thousand, five hundred fifty-one".