28049961 has 8 divisors (see below), whose sum is σ = 37425024. Its totient is φ = 18687440.

The previous prime is 28049953. The next prime is 28049969. The reversal of 28049961 is 16994082.

It is an interprime number because it is at equal distance from previous prime (28049953) and next prime (28049969).

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 28049961 - 2³ = 28049953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28049969) 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, 5431 + ... + 9251.

It is an arithmetic number, because the mean of its divisors is an integer number (4678128).

Almost surely, 2^28049961 is an apocalyptic number.

It is an amenable number.

28049961 is a deficient number, since it is larger than the sum of its proper divisors (9375063).

28049961 is a wasteful number, since it uses less digits than its factorization.

28049961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6271.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 28049961 is about 5296.2213888772. The cubic root of 28049961 is about 303.8393982319.

The spelling of 28049961 in words is "twenty-eight million, forty-nine thousand, nine hundred sixty-one".