2170139252 has 24 divisors (see below), whose sum is σ = 4055439360. Its totient is φ = 1013856480.

The previous prime is 2170139201. The next prime is 2170139261. The reversal of 2170139252 is 2529310712.

It is a super-2 number, since 2×2170139252² = 9419008746142239008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298148 + ... + 305339.

It is an arithmetic number, because the mean of its divisors is an integer number (168976640).

Almost surely, 2^2170139252 is an apocalyptic number.

It is an amenable number.

2170139252 is a deficient number, since it is larger than the sum of its proper divisors (1885300108).

2170139252 is a wasteful number, since it uses less digits than its factorization.

2170139252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603551 (or 603549 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 2170139252 is about 46584.7534285629. The cubic root of 2170139252 is about 1294.6802830234.

Adding to 2170139252 its reverse (2529310712), we get a palindrome (4699449964).

The spelling of 2170139252 in words is "two billion, one hundred seventy million, one hundred thirty-nine thousand, two hundred fifty-two".