28151651 has 8 divisors (see below), whose sum is σ = 31010304. Its totient is φ = 25342920.

The previous prime is 28151633. The next prime is 28151653. The reversal of 28151651 is 15615182.

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 28151651 - 2⁶ = 28151587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28151653) 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, 11291 + ... + 13556.

It is an arithmetic number, because the mean of its divisors is an integer number (3876288).

Almost surely, 2^28151651 is an apocalyptic number.

28151651 is a deficient number, since it is larger than the sum of its proper divisors (2858653).

28151651 is a wasteful number, since it uses less digits than its factorization.

28151651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24961.

The product of its digits is 2400, while the sum is 29.

The square root of 28151651 is about 5305.8129443093. The cubic root of 28151651 is about 304.2061267961.

The spelling of 28151651 in words is "twenty-eight million, one hundred fifty-one thousand, six hundred fifty-one".