28146396 has 12 divisors (see below), whose sum is σ = 65674952. Its totient is φ = 9382128.

The previous prime is 28146389. The next prime is 28146397. The reversal of 28146396 is 69364182.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28146397) 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, 1172755 + ... + 1172778.

Almost surely, 2^28146396 is an apocalyptic number.

It is an amenable number.

28146396 is an abundant number, since it is smaller than the sum of its proper divisors (37528556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28146396 is a wasteful number, since it uses less digits than its factorization.

28146396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345540 (or 2345538 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 28146396 is about 5305.3177096193. The cubic root of 28146396 is about 304.1871971464.

The spelling of 28146396 in words is "twenty-eight million, one hundred forty-six thousand, three hundred ninety-six".