10861988 has 6 divisors (see below), whose sum is σ = 19008486. Its totient is φ = 5430992.

The previous prime is 10861969. The next prime is 10861993. The reversal of 10861988 is 88916801.

It can be written as a sum of positive squares in only one way, i.e., 8952064 + 1909924 = 2992^2 + 1382^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1357745 + ... + 1357752.

It is an arithmetic number, because the mean of its divisors is an integer number (3168081).

Almost surely, 2^10861988 is an apocalyptic number.

It is an amenable number.

10861988 is a deficient number, since it is larger than the sum of its proper divisors (8146498).

10861988 is a wasteful number, since it uses less digits than its factorization.

10861988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715501 (or 2715499 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 41.

The square root of 10861988 is about 3295.7530247274. The cubic root of 10861988 is about 221.4639829199.

The spelling of 10861988 in words is "ten million, eight hundred sixty-one thousand, nine hundred eighty-eight".