28154161 has 8 divisors (see below), whose sum is σ = 32477760. Its totient is φ = 23905968.

The previous prime is 28154149. The next prime is 28154173. The reversal of 28154161 is 16145182.

It is an interprime number because it is at equal distance from previous prime (28154149) and next prime (28154173).

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 28154161 - 2¹⁹ = 27629873 is a prime.

It is a super-2 number, since 2×28154161² = 1585313563227842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28154131) 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 7 ways as a sum of consecutive naturals, for example, 18046 + ... + 19543.

It is an arithmetic number, because the mean of its divisors is an integer number (4059720).

Almost surely, 2^28154161 is an apocalyptic number.

It is an amenable number.

28154161 is a deficient number, since it is larger than the sum of its proper divisors (4323599).

28154161 is a wasteful number, since it uses less digits than its factorization.

28154161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37703.

The product of its digits is 1920, while the sum is 28.

The square root of 28154161 is about 5306.0494720649. The cubic root of 28154161 is about 304.2151675291.

The spelling of 28154161 in words is "twenty-eight million, one hundred fifty-four thousand, one hundred sixty-one".