20411070 has 48 divisors (see below), whose sum is σ = 50796720. Its totient is φ = 5248768.

The previous prime is 20411057. The next prime is 20411089. The reversal of 20411070 is 7011402.

It is a super-2 number, since 2×20411070² = 833223557089800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24826 + ... + 25634.

It is an arithmetic number, because the mean of its divisors is an integer number (1058265).

Almost surely, 2^20411070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20411070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25398360).

20411070 is an abundant number, since it is smaller than the sum of its proper divisors (30385650).

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

20411070 is a wasteful number, since it uses less digits than its factorization.

20411070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 20411070 is about 4517.8612196481. The cubic root of 20411070 is about 273.2888568653.

Adding to 20411070 its reverse (7011402), we get a palindrome (27422472).

The spelling of 20411070 in words is "twenty million, four hundred eleven thousand, seventy".