2157240030 has 48 divisors (see below), whose sum is σ = 5690844432. Its totient is φ = 522966400.

The previous prime is 2157240013. The next prime is 2157240061. The reversal of 2157240030 is 300427512.

2157240030 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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, 293511 + ... + 300770.

It is an arithmetic number, because the mean of its divisors is an integer number (118559259).

Almost surely, 2^2157240030 is an apocalyptic number.

2157240030 is an abundant number, since it is smaller than the sum of its proper divisors (3533604402).

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

2157240030 is a wasteful number, since it uses less digits than its factorization.

2157240030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594313 (or 594302 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 2157240030 is about 46446.0981138351. The cubic root of 2157240030 is about 1292.1100075827.

Adding to 2157240030 its reverse (300427512), we get a palindrome (2457667542).

The spelling of 2157240030 in words is "two billion, one hundred fifty-seven million, two hundred forty thousand, thirty".