211052420 has 24 divisors (see below), whose sum is σ = 454021848. Its totient is φ = 82361600.

The previous prime is 211052407. The next prime is 211052423. The reversal of 211052420 is 24250112.

It can be written as a sum of positive squares in 4 ways, for example, as 454276 + 210598144 = 674^2 + 14512^2 .

It is not an unprimeable number, because it can be changed into a prime (211052423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127871 + ... + 129510.

It is an arithmetic number, because the mean of its divisors is an integer number (18917577).

Almost surely, 2^211052420 is an apocalyptic number.

211052420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211052420 is an abundant number, since it is smaller than the sum of its proper divisors (242969428).

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

211052420 is a wasteful number, since it uses less digits than its factorization.

211052420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257431 (or 257429 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 211052420 is about 14527.6433050925. The cubic root of 211052420 is about 595.3834780498.

The spelling of 211052420 in words is "two hundred eleven million, fifty-two thousand, four hundred twenty".