20459070 has 48 divisors (see below), whose sum is σ = 54916992. Its totient is φ = 5279040.

The previous prime is 20459063. The next prime is 20459071. The reversal of 20459070 is 7095402.

20459070 is a `hidden beast` number, since 2 + 0 + 4 + 590 + 70 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20459071) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 877 + ... + 6456.

It is an arithmetic number, because the mean of its divisors is an integer number (1144104).

Almost surely, 2^20459070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20459070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27458496).

20459070 is an abundant number, since it is smaller than the sum of its proper divisors (34457922).

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

20459070 is a wasteful number, since it uses less digits than its factorization.

20459070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7377 (or 7374 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20459070 is about 4523.1703483287. The cubic root of 20459070 is about 273.5029171048.

The spelling of 20459070 in words is "twenty million, four hundred fifty-nine thousand, seventy".