20535416 has 16 divisors (see below), whose sum is σ = 42004440. Its totient is φ = 9334240.

The previous prime is 20535413. The next prime is 20535461. The reversal of 20535416 is 61453502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20535413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116591 + ... + 116766.

Almost surely, 2^20535416 is an apocalyptic number.

It is an amenable number.

20535416 is an abundant number, since it is smaller than the sum of its proper divisors (21469024).

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

20535416 is a wasteful number, since it uses less digits than its factorization.

20535416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233374 (or 233370 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 20535416 is about 4531.6019242648. The cubic root of 20535416 is about 273.8427001303.

Adding to 20535416 its reverse (61453502), we get a palindrome (81988918).

The spelling of 20535416 in words is "twenty million, five hundred thirty-five thousand, four hundred sixteen".