211157070 has 32 divisors (see below), whose sum is σ = 533450880. Its totient is φ = 53344800.

The previous prime is 211157059. The next prime is 211157071. The reversal of 211157070 is 70751112.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211157070.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211157071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184656 + ... + 185795.

It is an arithmetic number, because the mean of its divisors is an integer number (16670340).

Almost surely, 2^211157070 is an apocalyptic number.

211157070 is an abundant number, since it is smaller than the sum of its proper divisors (322293810).

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

211157070 is a wasteful number, since it uses less digits than its factorization.

211157070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370480.

The product of its (nonzero) digits is 490, while the sum is 24.

The square root of 211157070 is about 14531.2446129022. The cubic root of 211157070 is about 595.4818684331.

The spelling of 211157070 in words is "two hundred eleven million, one hundred fifty-seven thousand, seventy".