28310190 has 32 divisors (see below), whose sum is σ = 71521920. Its totient is φ = 7151904.

The previous prime is 28310173. The next prime is 28310197. The reversal of 28310190 is 9101382.

It is a super-2 number, since 2×28310190² = 1602933715672200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28310190.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28310197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24264 + ... + 25403.

It is an arithmetic number, because the mean of its divisors is an integer number (2235060).

Almost surely, 2^28310190 is an apocalyptic number.

28310190 is an abundant number, since it is smaller than the sum of its proper divisors (43211730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28310190 is a wasteful number, since it uses less digits than its factorization.

28310190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49696.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 28310190 is about 5320.7320924850. The cubic root of 28310190 is about 304.7761144749.

The spelling of 28310190 in words is "twenty-eight million, three hundred ten thousand, one hundred ninety".