20343016 has 32 divisors (see below), whose sum is σ = 40814280. Its totient is φ = 9472000.

The previous prime is 20342981. The next prime is 20343019. The reversal of 20343016 is 61034302.

20343016 = T₈₉ + T₉₀ + ... + T₄₉₆.

It can be written as a sum of positive squares in 4 ways, for example, as 20340100 + 2916 = 4510^2 + 54^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20342984 and 20343002.

It is not an unprimeable number, because it can be changed into a prime (20343019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12996 + ... + 14476.

Almost surely, 2^20343016 is an apocalyptic number.

It is an amenable number.

20343016 is an abundant number, since it is smaller than the sum of its proper divisors (20471264).

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

20343016 is a wasteful number, since it uses less digits than its factorization.

20343016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605 (or 1601 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20343016 is about 4510.3232700107. The cubic root of 20343016 is about 272.9847880712.

Adding to 20343016 its reverse (61034302), we get a palindrome (81377318).

It can be divided in two parts, 2034 and 3016, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 20343016 in words is "twenty million, three hundred forty-three thousand, sixteen".