28948090 has 32 divisors (see below), whose sum is σ = 54308880. Its totient is φ = 11096064.

The previous prime is 28948069. The next prime is 28948103. The reversal of 28948090 is 9084982.

28948090 = 320² + 321² + ... + 492².

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 27133681 + 1814409 = 5209^2 + 1347^2 .

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, 49882 + ... + 50458.

Almost surely, 2^28948090 is an apocalyptic number.

28948090 is a deficient number, since it is larger than the sum of its proper divisors (25360790).

28948090 is a wasteful number, since it uses less digits than its factorization.

28948090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 28948090 is about 5380.3429258738. The cubic root of 28948090 is about 307.0482581779.

The spelling of 28948090 in words is "twenty-eight million, nine hundred forty-eight thousand, ninety".