28455651 has 16 divisors (see below), whose sum is σ = 48179200. Its totient is φ = 16260264.

The previous prime is 28455643. The next prime is 28455653. The reversal of 28455651 is 15655482.

It is not a de Polignac number, because 28455651 - 2³ = 28455643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28455653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75091 + ... + 75468.

It is an arithmetic number, because the mean of its divisors is an integer number (3011200).

Almost surely, 2^28455651 is an apocalyptic number.

28455651 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28455651 is a deficient number, since it is larger than the sum of its proper divisors (19723549).

28455651 is a wasteful number, since it uses less digits than its factorization.

28455651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150575 (or 150569 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 28455651 is about 5334.3838444566. The cubic root of 28455651 is about 305.2972145333.

The spelling of 28455651 in words is "twenty-eight million, four hundred fifty-five thousand, six hundred fifty-one".