28154001 has 16 divisors (see below), whose sum is σ = 39818880. Its totient is φ = 17656320.

The previous prime is 28153999. The next prime is 28154011. The reversal of 28154001 is 10045182.

It is not a de Polignac number, because 28154001 - 2¹ = 28153999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28154011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 865 + ... + 7553.

It is an arithmetic number, because the mean of its divisors is an integer number (2488680).

Almost surely, 2^28154001 is an apocalyptic number.

It is an amenable number.

28154001 is a deficient number, since it is larger than the sum of its proper divisors (11664879).

28154001 is a wasteful number, since it uses less digits than its factorization.

28154001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 28154001 is about 5306.0343949130. The cubic root of 28154001 is about 304.2145912434.

Adding to 28154001 its reverse (10045182), we get a palindrome (38199183).

The spelling of 28154001 in words is "twenty-eight million, one hundred fifty-four thousand, one".