28898947 has 8 divisors (see below), whose sum is σ = 36029952. Its totient is φ = 22518600.

The previous prime is 28898899. The next prime is 28898951. The reversal of 28898947 is 74989882.

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

It is a cyclic number.

It is not a de Polignac number, because 28898947 - 2²³ = 20510339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28898957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187579 + ... + 187732.

It is an arithmetic number, because the mean of its divisors is an integer number (4503744).

Almost surely, 2^28898947 is an apocalyptic number.

28898947 is a deficient number, since it is larger than the sum of its proper divisors (7131005).

28898947 is a wasteful number, since it uses less digits than its factorization.

28898947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375329.

The product of its digits is 2322432, while the sum is 55.

The square root of 28898947 is about 5375.7740837948. The cubic root of 28898947 is about 306.8744088352.

It can be divided in two parts, 288 and 98947, that added together give a triangular number (99235 = T₄₄₅).

The spelling of 28898947 in words is "twenty-eight million, eight hundred ninety-eight thousand, nine hundred forty-seven".