20148208 has 40 divisors (see below), whose sum is σ = 41425920. Its totient is φ = 9466560.

The previous prime is 20148137. The next prime is 20148211. The reversal of 20148208 is 80284102.

It is a super-2 number, since 2×20148208² = 811900571222528, which contains 22 as substring.

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, 57891 + ... + 58237.

It is an arithmetic number, because the mean of its divisors is an integer number (1035648).

Almost surely, 2^20148208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20148208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20712960).

20148208 is an abundant number, since it is smaller than the sum of its proper divisors (21277712).

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

20148208 is a wasteful number, since it uses less digits than its factorization.

20148208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 20148208 is about 4488.6755284828. The cubic root of 20148208 is about 272.1106095701.

The spelling of 20148208 in words is "twenty million, one hundred forty-eight thousand, two hundred eight".