28898308 has 6 divisors (see below), whose sum is σ = 50572046. Its totient is φ = 14449152.

The previous prime is 28898273. The next prime is 28898329. The reversal of 28898308 is 80389882.

It can be written as a sum of positive squares in only one way, i.e., 26234884 + 2663424 = 5122^2 + 1632^2 .

It is a super-2 number, since 2×28898308² = 1670224410525728, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3612285 + ... + 3612292.

Almost surely, 2^28898308 is an apocalyptic number.

It is an amenable number.

28898308 is a deficient number, since it is larger than the sum of its proper divisors (21673738).

28898308 is a wasteful number, since it uses less digits than its factorization.

28898308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7224581 (or 7224579 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 28898308 is about 5375.7146501651. The cubic root of 28898308 is about 306.8721469974.

It can be divided in two parts, 288 and 98308, that added together give a square (98596 = 314²).

The spelling of 28898308 in words is "twenty-eight million, eight hundred ninety-eight thousand, three hundred eight".