20408148 has 36 divisors (see below), whose sum is σ = 51891840. Its totient is φ = 6762576.

The previous prime is 20408117. The next prime is 20408189. The reversal of 20408148 is 84180402.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4861 + ... + 8027.

It is an arithmetic number, because the mean of its divisors is an integer number (1441440).

Almost surely, 2^20408148 is an apocalyptic number.

It is an amenable number.

20408148 is an abundant number, since it is smaller than the sum of its proper divisors (31483692).

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

20408148 is a wasteful number, since it uses less digits than its factorization.

20408148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3356 (or 3351 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 20408148 is about 4517.5378249662. The cubic root of 20408148 is about 273.2758151164.

The spelling of 20408148 in words is "twenty million, four hundred eight thousand, one hundred forty-eight".