28980938 has 8 divisors (see below), whose sum is σ = 49681632. Its totient is φ = 12420396.

The previous prime is 28980907. The next prime is 28980949. The reversal of 28980938 is 83908982.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28980892 and 28980901.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1035020 + ... + 1035047.

It is an arithmetic number, because the mean of its divisors is an integer number (6210204).

Almost surely, 2^28980938 is an apocalyptic number.

28980938 is a deficient number, since it is larger than the sum of its proper divisors (20700694).

28980938 is a wasteful number, since it uses less digits than its factorization.

28980938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070076.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 28980938 is about 5383.3946539335. The cubic root of 28980938 is about 307.1643522931.

The spelling of 28980938 in words is "twenty-eight million, nine hundred eighty thousand, nine hundred thirty-eight".