2156420350 has 24 divisors (see below), whose sum is σ = 4583934288. Its totient is φ = 739344000.

The previous prime is 2156420341. The next prime is 2156420351. The reversal of 2156420350 is 530246512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156420351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3080251 + ... + 3080950.

It is an arithmetic number, because the mean of its divisors is an integer number (190997262).

Almost surely, 2^2156420350 is an apocalyptic number.

2156420350 is an abundant number, since it is smaller than the sum of its proper divisors (2427513938).

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

2156420350 is a wasteful number, since it uses less digits than its factorization.

2156420350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6161220 (or 6161215 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 2156420350 is about 46437.2732834304. The cubic root of 2156420350 is about 1291.9463338008.

Adding to 2156420350 its reverse (530246512), we get a palindrome (2686666862).

It can be divided in two parts, 21564 and 20350, that added together give a palindrome (41914).

The spelling of 2156420350 in words is "two billion, one hundred fifty-six million, four hundred twenty thousand, three hundred fifty".