20218352 has 40 divisors (see below), whose sum is σ = 48842112. Its totient is φ = 7876800.

The previous prime is 20218349. The next prime is 20218361. The reversal of 20218352 is 25381202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6974 + ... + 9437.

Almost surely, 2^20218352 is an apocalyptic number.

20218352 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20218352 is an abundant number, since it is smaller than the sum of its proper divisors (28623760).

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

20218352 is a wasteful number, since it uses less digits than its factorization.

20218352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16437 (or 16431 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 20218352 is about 4496.4821805496. The cubic root of 20218352 is about 272.4260192514.

Adding to 20218352 its reverse (25381202), we get a palindrome (45599554).

The spelling of 20218352 in words is "twenty million, two hundred eighteen thousand, three hundred fifty-two".