28154634 has 32 divisors (see below), whose sum is σ = 58467840. Its totient is φ = 9028800.

The previous prime is 28154629. The next prime is 28154639. The reversal of 28154634 is 43645182.

It is an interprime number because it is at equal distance from previous prime (28154629) and next prime (28154639).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28154595 and 28154604.

It is not an unprimeable number, because it can be changed into a prime (28154639) 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, 42264 + ... + 42924.

It is an arithmetic number, because the mean of its divisors is an integer number (1827120).

Almost surely, 2^28154634 is an apocalyptic number.

28154634 is an abundant number, since it is smaller than the sum of its proper divisors (30313206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28154634 is a wasteful number, since it uses less digits than its factorization.

28154634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926.

The product of its digits is 23040, while the sum is 33.

The square root of 28154634 is about 5306.0940436445. The cubic root of 28154634 is about 304.2168711609.

The spelling of 28154634 in words is "twenty-eight million, one hundred fifty-four thousand, six hundred thirty-four".