28821962 has 8 divisors (see below), whose sum is σ = 46558596. Its totient is φ = 13302432.

The previous prime is 28821959. The next prime is 28822009. The reversal of 28821962 is 26912882.

It can be written as a sum of positive squares in 2 ways, for example, as 27050401 + 1771561 = 5201^2 + 1331^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554243 + ... + 554294.

Almost surely, 2^28821962 is an apocalyptic number.

28821962 is a deficient number, since it is larger than the sum of its proper divisors (17736634).

28821962 is a wasteful number, since it uses less digits than its factorization.

28821962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108552.

The product of its digits is 27648, while the sum is 38.

The square root of 28821962 is about 5368.6089445964. The cubic root of 28821962 is about 306.6016683816.

The spelling of 28821962 in words is "twenty-eight million, eight hundred twenty-one thousand, nine hundred sixty-two".