28471953 has 8 divisors (see below), whose sum is σ = 39613248. Its totient is φ = 18155984.

The previous prime is 28471943. The next prime is 28471967. The reversal of 28471953 is 35917482.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28471953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28471903) 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, 206250 + ... + 206387.

It is an arithmetic number, because the mean of its divisors is an integer number (4951656).

Almost surely, 2^28471953 is an apocalyptic number.

28471953 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28471953 is a deficient number, since it is larger than the sum of its proper divisors (11141295).

28471953 is a wasteful number, since it uses less digits than its factorization.

28471953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412663.

The product of its digits is 60480, while the sum is 39.

The square root of 28471953 is about 5335.9116371994. The cubic root of 28471953 is about 305.3555041278.

The spelling of 28471953 in words is "twenty-eight million, four hundred seventy-one thousand, nine hundred fifty-three".