28600290 has 160 divisors (see below), whose sum is σ = 85307904. Its totient is φ = 6842880.

The previous prime is 28600283. The next prime is 28600303. The reversal of 28600290 is 9200682.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 426837 + ... + 426903.

Almost surely, 2^28600290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28600290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42653952).

28600290 is an abundant number, since it is smaller than the sum of its proper divisors (56707614).

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

28600290 is a wasteful number, since it uses less digits than its factorization.

28600290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28600290 is about 5347.9238962424. The cubic root of 28600290 is about 305.8136119822.

The spelling of 28600290 in words is "twenty-eight million, six hundred thousand, two hundred ninety".