28738995 has 8 divisors (see below), whose sum is σ = 45982416. Its totient is φ = 15327456.

The previous prime is 28738981. The next prime is 28739003. The reversal of 28738995 is 59983782.

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

It is not a de Polignac number, because 28738995 - 2¹¹ = 28736947 is a prime.

It is a super-2 number, since 2×28738995² = 1651859667220050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 957952 + ... + 957981.

It is an arithmetic number, because the mean of its divisors is an integer number (5747802).

Almost surely, 2^28738995 is an apocalyptic number.

28738995 is a deficient number, since it is larger than the sum of its proper divisors (17243421).

28738995 is a wasteful number, since it uses less digits than its factorization.

28738995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915941.

The product of its digits is 1088640, while the sum is 51.

The square root of 28738995 is about 5360.8763276166. The cubic root of 28738995 is about 306.3071907631.

The spelling of 28738995 in words is "twenty-eight million, seven hundred thirty-eight thousand, nine hundred ninety-five".