28415190 has 32 divisors (see below), whose sum is σ = 68586336. Its totient is φ = 7534080.

The previous prime is 28415183. The next prime is 28415201. The reversal of 28415190 is 9151482.

It is a happy number.

It is a super-2 number, since 2×28415190² = 1614846045472200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2814 + ... + 8046.

It is an arithmetic number, because the mean of its divisors is an integer number (2143323).

Almost surely, 2^28415190 is an apocalyptic number.

28415190 is an abundant number, since it is smaller than the sum of its proper divisors (40171146).

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

28415190 is a wasteful number, since it uses less digits than its factorization.

28415190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5424.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 28415190 is about 5330.5900236278. The cubic root of 28415190 is about 305.1524455153.

The spelling of 28415190 in words is "twenty-eight million, four hundred fifteen thousand, one hundred ninety".