20070270 has 144 divisors (see below), whose sum is σ = 60999120. Its totient is φ = 4561920.

The previous prime is 20070257. The next prime is 20070307. The reversal of 20070270 is 7207002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 206862 + ... + 206958.

It is an arithmetic number, because the mean of its divisors is an integer number (423605).

Almost surely, 2^20070270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20070270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30499560).

20070270 is an abundant number, since it is smaller than the sum of its proper divisors (40928850).

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

20070270 is a wasteful number, since it uses less digits than its factorization.

20070270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 18.

The square root of 20070270 is about 4479.9854910479. The cubic root of 20070270 is about 271.7592936097.

Adding to 20070270 its reverse (7207002), we get a palindrome (27277272).

The spelling of 20070270 in words is "twenty million, seventy thousand, two hundred seventy".