20016453 has 8 divisors (see below), whose sum is σ = 26849088. Its totient is φ = 13264064.

The previous prime is 20016439. The next prime is 20016461. The reversal of 20016453 is 35461002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20016453 - 2⁶ = 20016389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20016413) 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, 19476 + ... + 20477.

It is an arithmetic number, because the mean of its divisors is an integer number (3356136).

Almost surely, 2^20016453 is an apocalyptic number.

It is an amenable number.

20016453 is a deficient number, since it is larger than the sum of its proper divisors (6832635).

20016453 is a wasteful number, since it uses less digits than its factorization.

20016453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40123.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 20016453 is about 4473.9750781604. The cubic root of 20016453 is about 271.5161751129.

Adding to 20016453 its reverse (35461002), we get a palindrome (55477455).

It can be divided in two parts, 200 and 16453, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 20016453 in words is "twenty million, sixteen thousand, four hundred fifty-three".