20470902 has 16 divisors (see below), whose sum is σ = 41014272. Its totient is φ = 6811560.

The previous prime is 20470889. The next prime is 20470939. The reversal of 20470902 is 20907402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1083 + ... + 6489.

It is an arithmetic number, because the mean of its divisors is an integer number (2563392).

Almost surely, 2^20470902 is an apocalyptic number.

20470902 is an abundant number, since it is smaller than the sum of its proper divisors (20543370).

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

20470902 is a wasteful number, since it uses less digits than its factorization.

20470902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6043.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 20470902 is about 4524.4780914488. The cubic root of 20470902 is about 273.5556315061. Note that the first 3 decimals are identical.

The spelling of 20470902 in words is "twenty million, four hundred seventy thousand, nine hundred two".