20355102 has 24 divisors (see below), whose sum is σ = 44400720. Its totient is φ = 6739200.

The previous prime is 20355067. The next prime is 20355107. The reversal of 20355102 is 20155302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20355107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1027 + ... + 6462.

It is an arithmetic number, because the mean of its divisors is an integer number (1850030).

Almost surely, 2^20355102 is an apocalyptic number.

20355102 is an abundant number, since it is smaller than the sum of its proper divisors (24045618).

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

20355102 is a wasteful number, since it uses less digits than its factorization.

20355102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7648 (or 7645 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 20355102 is about 4511.6628863425. The cubic root of 20355102 is about 273.0388384143.

The spelling of 20355102 in words is "twenty million, three hundred fifty-five thousand, one hundred two".