28151386 has 8 divisors (see below), whose sum is σ = 42250464. Its totient is φ = 14067900.

The previous prime is 28151381. The next prime is 28151393. The reversal of 28151386 is 68315182.

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

It is not an unprimeable number, because it can be changed into a prime (28151381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3211 + ... + 8161.

It is an arithmetic number, because the mean of its divisors is an integer number (5281308).

Almost surely, 2^28151386 is an apocalyptic number.

28151386 is a deficient number, since it is larger than the sum of its proper divisors (14099078).

28151386 is a wasteful number, since it uses less digits than its factorization.

28151386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7796.

The product of its digits is 11520, while the sum is 34.

The square root of 28151386 is about 5305.7879716400. The cubic root of 28151386 is about 304.2051722650.

The spelling of 28151386 in words is "twenty-eight million, one hundred fifty-one thousand, three hundred eighty-six".