28530151 has 8 divisors (see below), whose sum is σ = 30859920. Its totient is φ = 26219712.

The previous prime is 28530149. The next prime is 28530181. The reversal of 28530151 is 15103582.

It is a happy number.

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 28530151 - 2¹ = 28530149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28530121) 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, 1681 + ... + 7738.

It is an arithmetic number, because the mean of its divisors is an integer number (3857490).

Almost surely, 2^28530151 is an apocalyptic number.

28530151 is a deficient number, since it is larger than the sum of its proper divisors (2329769).

28530151 is a wasteful number, since it uses less digits than its factorization.

28530151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9665.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 28530151 is about 5341.3622794190. The cubic root of 28530151 is about 305.5634161626.

The spelling of 28530151 in words is "twenty-eight million, five hundred thirty thousand, one hundred fifty-one".