32990881 has 16 divisors (see below), whose sum is σ = 41408640. Its totient is φ = 25534080.

The previous prime is 32990879. The next prime is 32990891. The reversal of 32990881 is 18809923.

It is not a de Polignac number, because 32990881 - 2¹ = 32990879 is a prime.

It is a super-2 number, since 2×32990881² = 2176796458312322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (32990801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10725 + ... + 13453.

It is an arithmetic number, because the mean of its divisors is an integer number (2588040).

Almost surely, 2^32990881 is an apocalyptic number.

It is an amenable number.

32990881 is a deficient number, since it is larger than the sum of its proper divisors (8417759).

32990881 is a wasteful number, since it uses less digits than its factorization.

32990881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 32990881 is about 5743.7688846262. The cubic root of 32990881 is about 320.7238853226.

The spelling of 32990881 in words is "thirty-two million, nine hundred ninety thousand, eight hundred eighty-one".