28379650 has 24 divisors (see below), whose sum is σ = 56847924. Its totient is φ = 10478400.

The previous prime is 28379641. The next prime is 28379651. The reversal of 28379650 is 5697382.

It can be written as a sum of positive squares in 6 ways, for example, as 11015761 + 17363889 = 3319^2 + 4167^2 .

It is not an unprimeable number, because it can be changed into a prime (28379651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21181 + ... + 22480.

Almost surely, 2^28379650 is an apocalyptic number.

28379650 is an abundant number, since it is smaller than the sum of its proper divisors (28468274).

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

28379650 is a wasteful number, since it uses less digits than its factorization.

28379650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43686 (or 43681 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 28379650 is about 5327.2553909119. The cubic root of 28379650 is about 305.0251703674.

The spelling of 28379650 in words is "twenty-eight million, three hundred seventy-nine thousand, six hundred fifty".