28358490 has 32 divisors (see below), whose sum is σ = 70258176. Its totient is φ = 7318080.

The previous prime is 28358483. The next prime is 28358569. The reversal of 28358490 is 9485382.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14317 + ... + 16176.

It is an arithmetic number, because the mean of its divisors is an integer number (2195568).

Almost surely, 2^28358490 is an apocalyptic number.

28358490 is an abundant number, since it is smaller than the sum of its proper divisors (41899686).

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

28358490 is a wasteful number, since it uses less digits than its factorization.

28358490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30534.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 28358490 is about 5325.2690072897. The cubic root of 28358490 is about 304.9493421196.

It can be divided in two parts, 2835 and 8490, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 28358490 in words is "twenty-eight million, three hundred fifty-eight thousand, four hundred ninety".