20340332 has 6 divisors (see below), whose sum is σ = 35595588. Its totient is φ = 10170164.

The previous prime is 20340323. The next prime is 20340373. The reversal of 20340332 is 23304302.

It is a self number, because there is not a number n which added to its sum of digits gives 20340332.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2542538 + ... + 2542545.

It is an arithmetic number, because the mean of its divisors is an integer number (5932598).

Almost surely, 2^20340332 is an apocalyptic number.

It is an amenable number.

20340332 is a deficient number, since it is larger than the sum of its proper divisors (15255256).

20340332 is a wasteful number, since it uses less digits than its factorization.

20340332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085087 (or 5085085 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 20340332 is about 4510.0257205475. The cubic root of 20340332 is about 272.9727819296.

Adding to 20340332 its reverse (23304302), we get a palindrome (43644634).

The spelling of 20340332 in words is "twenty million, three hundred forty thousand, three hundred thirty-two".