211402972 has 36 divisors (see below), whose sum is σ = 408083368. Its totient is φ = 95752800.

The previous prime is 211402969. The next prime is 211402979. The reversal of 211402972 is 279204112.

It is a self number, because there is not a number n which added to its sum of digits gives 211402972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211402979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179947 + ... + 181117.

Almost surely, 2^211402972 is an apocalyptic number.

211402972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211402972 is a deficient number, since it is larger than the sum of its proper divisors (196680396).

211402972 is a wasteful number, since it uses less digits than its factorization.

211402972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 211402972 is about 14539.7032982107. The cubic root of 211402972 is about 595.7129339896.

The spelling of 211402972 in words is "two hundred eleven million, four hundred two thousand, nine hundred seventy-two".