28148398 has 8 divisors (see below), whose sum is σ = 42412608. Its totient is φ = 14010864.

The previous prime is 28148387. The next prime is 28148399. The reversal of 28148398 is 89384182.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28148399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31111 + ... + 32002.

It is an arithmetic number, because the mean of its divisors is an integer number (5301576).

Almost surely, 2^28148398 is an apocalyptic number.

28148398 is a deficient number, since it is larger than the sum of its proper divisors (14264210).

28148398 is a wasteful number, since it uses less digits than its factorization.

28148398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63338.

The product of its digits is 110592, while the sum is 43.

The square root of 28148398 is about 5305.5063848798. The cubic root of 28148398 is about 304.1944090624.

The spelling of 28148398 in words is "twenty-eight million, one hundred forty-eight thousand, three hundred ninety-eight".