28898475 has 24 divisors (see below), whose sum is σ = 47935920. Its totient is φ = 15361920.

The previous prime is 28898473. The next prime is 28898477. The reversal of 28898475 is 57489882.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28898473) and next prime (28898477).

It is not a de Polignac number, because 28898475 - 2¹ = 28898473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28898473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37797 + ... + 38553.

It is an arithmetic number, because the mean of its divisors is an integer number (1997330).

Almost surely, 2^28898475 is an apocalyptic number.

28898475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28898475 is a deficient number, since it is larger than the sum of its proper divisors (19037445).

28898475 is a wasteful number, since it uses less digits than its factorization.

28898475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1274 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 51.

The square root of 28898475 is about 5375.7301829612. The cubic root of 28898475 is about 306.8727381225.

The spelling of 28898475 in words is "twenty-eight million, eight hundred ninety-eight thousand, four hundred seventy-five".