20153316 has 12 divisors (see below), whose sum is σ = 47024432. Its totient is φ = 6717768.

The previous prime is 20153299. The next prime is 20153321. The reversal of 20153316 is 61335102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×20153316² = 812312291591712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20153292 and 20153301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839710 + ... + 839733.

Almost surely, 2^20153316 is an apocalyptic number.

It is an amenable number.

20153316 is an abundant number, since it is smaller than the sum of its proper divisors (26871116).

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

20153316 is a wasteful number, since it uses less digits than its factorization.

20153316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679450 (or 1679448 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 20153316 is about 4489.2444798652. The cubic root of 20153316 is about 272.1336029062.

Adding to 20153316 its reverse (61335102), we get a palindrome (81488418).

The spelling of 20153316 in words is "twenty million, one hundred fifty-three thousand, three hundred sixteen".