28769396 has 6 divisors (see below), whose sum is σ = 50346450. Its totient is φ = 14384696.

The previous prime is 28769383. The next prime is 28769449. The reversal of 28769396 is 69396782.

It can be written as a sum of positive squares in only one way, i.e., 26666896 + 2102500 = 5164^2 + 1450^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3596171 + ... + 3596178.

It is an arithmetic number, because the mean of its divisors is an integer number (8391075).

Almost surely, 2^28769396 is an apocalyptic number.

It is an amenable number.

28769396 is a deficient number, since it is larger than the sum of its proper divisors (21577054).

28769396 is a wasteful number, since it uses less digits than its factorization.

28769396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7192353 (or 7192351 counting only the distinct ones).

The product of its digits is 979776, while the sum is 50.

The square root of 28769396 is about 5363.7110287561. The cubic root of 28769396 is about 306.4151597823.

The spelling of 28769396 in words is "twenty-eight million, seven hundred sixty-nine thousand, three hundred ninety-six".