28542308 has 6 divisors (see below), whose sum is σ = 49949046. Its totient is φ = 14271152.

The previous prime is 28542277. The next prime is 28542317. The reversal of 28542308 is 80324582.

It can be written as a sum of positive squares in only one way, i.e., 22963264 + 5579044 = 4792^2 + 2362^2 .

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, 3567785 + ... + 3567792.

It is an arithmetic number, because the mean of its divisors is an integer number (8324841).

Almost surely, 2^28542308 is an apocalyptic number.

It is an amenable number.

28542308 is a deficient number, since it is larger than the sum of its proper divisors (21406738).

28542308 is a wasteful number, since it uses less digits than its factorization.

28542308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135581 (or 7135579 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 28542308 is about 5342.5001637810. The cubic root of 28542308 is about 305.6068112706.

The spelling of 28542308 in words is "twenty-eight million, five hundred forty-two thousand, three hundred eight".