28494190 has 8 divisors (see below), whose sum is σ = 51289560. Its totient is φ = 11397672.

The previous prime is 28494187. The next prime is 28494197. The reversal of 28494190 is 9149482.

It is a happy number.

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

It is a super-2 number, since 2×28494190² = 1623837727512200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28494197) 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, 1424700 + ... + 1424719.

It is an arithmetic number, because the mean of its divisors is an integer number (6411195).

Almost surely, 2^28494190 is an apocalyptic number.

28494190 is a deficient number, since it is larger than the sum of its proper divisors (22795370).

28494190 is a wasteful number, since it uses less digits than its factorization.

28494190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849426.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 28494190 is about 5337.9949419234. The cubic root of 28494190 is about 305.4349791040.

The spelling of 28494190 in words is "twenty-eight million, four hundred ninety-four thousand, one hundred ninety".