28402033 has 8 divisors (see below), whose sum is σ = 32331456. Its totient is φ = 24697200.

The previous prime is 28402007. The next prime is 28402039. The reversal of 28402033 is 33020482.

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

It is not a de Polignac number, because 28402033 - 2¹⁷ = 28270961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28401995 and 28402013.

It is not an unprimeable number, because it can be changed into a prime (28402039) 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, 55878 + ... + 56383.

It is an arithmetic number, because the mean of its divisors is an integer number (4041432).

Almost surely, 2^28402033 is an apocalyptic number.

28402033 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28402033 is a deficient number, since it is larger than the sum of its proper divisors (3929423).

28402033 is a wasteful number, since it uses less digits than its factorization.

28402033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112295.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 28402033 is about 5329.3557772023. The cubic root of 28402033 is about 305.1053403044.

The spelling of 28402033 in words is "twenty-eight million, four hundred two thousand, thirty-three".