20153214 has 12 divisors (see below), whose sum is σ = 43665336. Its totient is φ = 6717732.

The previous prime is 20153213. The next prime is 20153219. The reversal of 20153214 is 41235102.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1119623 = 20153214 / (2 + 0 + 1 + 5 + 3 + 2 + 1 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 559794 + ... + 559829.

It is an arithmetic number, because the mean of its divisors is an integer number (3638778).

Almost surely, 2^20153214 is an apocalyptic number.

20153214 is an abundant number, since it is smaller than the sum of its proper divisors (23512122).

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

20153214 is a wasteful number, since it uses less digits than its factorization.

20153214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119631 (or 1119628 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20153214 is about 4489.2331193646. The cubic root of 20153214 is about 272.1331437977.

Adding to 20153214 its reverse (41235102), we get a palindrome (61388316).

The spelling of 20153214 in words is "twenty million, one hundred fifty-three thousand, two hundred fourteen".