28861953 has 8 divisors (see below), whose sum is σ = 38510688. Its totient is φ = 19227264.

The previous prime is 28861949. The next prime is 28861957. The reversal of 28861953 is 35916882.

It is an interprime number because it is at equal distance from previous prime (28861949) and next prime (28861957).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28861953 - 2² = 28861949 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28861957) 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, 3025 + ... + 8177.

It is an arithmetic number, because the mean of its divisors is an integer number (4813836).

Almost surely, 2^28861953 is an apocalyptic number.

It is an amenable number.

28861953 is a deficient number, since it is larger than the sum of its proper divisors (9648735).

28861953 is a wasteful number, since it uses less digits than its factorization.

28861953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7023.

The product of its digits is 103680, while the sum is 42.

The square root of 28861953 is about 5372.3321751359. The cubic root of 28861953 is about 306.7434079893.

The spelling of 28861953 in words is "twenty-eight million, eight hundred sixty-one thousand, nine hundred fifty-three".