28590294 has 16 divisors (see below), whose sum is σ = 60544368. Its totient is φ = 8969472.

The previous prime is 28590281. The next prime is 28590301. The reversal of 28590294 is 49209582.

It is a super-2 number, since 2×28590294² = 1634809822012872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140047 + ... + 140250.

It is an arithmetic number, because the mean of its divisors is an integer number (3784023).

Almost surely, 2^28590294 is an apocalyptic number.

28590294 is an abundant number, since it is smaller than the sum of its proper divisors (31954074).

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

28590294 is a wasteful number, since it uses less digits than its factorization.

28590294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280319.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 28590294 is about 5346.9892462955. The cubic root of 28590294 is about 305.7779798369. Note that the first 3 decimals are identical.

The spelling of 28590294 in words is "twenty-eight million, five hundred ninety thousand, two hundred ninety-four".