28590146 has 8 divisors (see below), whose sum is σ = 46184124. Its totient is φ = 13195440.

The previous prime is 28590139. The next prime is 28590181. The reversal of 28590146 is 64109582.

It can be written as a sum of positive squares in 2 ways, for example, as 27678121 + 912025 = 5261^2 + 955^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549785 + ... + 549836.

Almost surely, 2^28590146 is an apocalyptic number.

28590146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28590146 is a deficient number, since it is larger than the sum of its proper divisors (17593978).

28590146 is a wasteful number, since it uses less digits than its factorization.

28590146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099636.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 28590146 is about 5346.9754067136. The cubic root of 28590146 is about 305.7774522077. Note that the first 3 decimals are identical.

The spelling of 28590146 in words is "twenty-eight million, five hundred ninety thousand, one hundred forty-six".