28038190 has 8 divisors (see below), whose sum is σ = 50468760. Its totient is φ = 11215272.

The previous prime is 28038169. The next prime is 28038191. The reversal of 28038190 is 9183082.

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

It is a super-2 number, since 2×28038190² = 1572280196952200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28038191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401900 + ... + 1401919.

It is an arithmetic number, because the mean of its divisors is an integer number (6308595).

Almost surely, 2^28038190 is an apocalyptic number.

28038190 is a deficient number, since it is larger than the sum of its proper divisors (22430570).

28038190 is a wasteful number, since it uses less digits than its factorization.

28038190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803826.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 28038190 is about 5295.1100083001. The cubic root of 28038190 is about 303.7968908174.

The spelling of 28038190 in words is "twenty-eight million, thirty-eight thousand, one hundred ninety".