32991102 has 12 divisors (see below), whose sum is σ = 71480760. Its totient is φ = 10997028.

The previous prime is 32991083. The next prime is 32991103. The reversal of 32991102 is 20119923.

It is a super-2 number, since 2×32991102² = 2176825622348808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32991103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 916402 + ... + 916437.

It is an arithmetic number, because the mean of its divisors is an integer number (5956730).

Almost surely, 2^32991102 is an apocalyptic number.

32991102 is an abundant number, since it is smaller than the sum of its proper divisors (38489658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

32991102 is a wasteful number, since it uses less digits than its factorization.

32991102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832847 (or 1832844 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 32991102 is about 5743.7881228332. The cubic root of 32991102 is about 320.7246014783.

The spelling of 32991102 in words is "thirty-two million, nine hundred ninety-one thousand, one hundred two".