28383970 has 8 divisors (see below), whose sum is σ = 51091164. Its totient is φ = 11353584.

The previous prime is 28383919. The next prime is 28383973. The reversal of 28383970 is 7938382.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25310961 + 3073009 = 5031^2 + 1753^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28383973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1419189 + ... + 1419208.

Almost surely, 2^28383970 is an apocalyptic number.

28383970 is a deficient number, since it is larger than the sum of its proper divisors (22707194).

28383970 is a wasteful number, since it uses less digits than its factorization.

28383970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838404.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 28383970 is about 5327.6608375534. The cubic root of 28383970 is about 305.0406467373.

The spelling of 28383970 in words is "twenty-eight million, three hundred eighty-three thousand, nine hundred seventy".