211072430 has 8 divisors (see below), whose sum is σ = 379930392. Its totient is φ = 84428968.

The previous prime is 211072429. The next prime is 211072439. The reversal of 211072430 is 34270112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×211072430² = 89103141412209800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211072439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10553612 + ... + 10553631.

It is an arithmetic number, because the mean of its divisors is an integer number (47491299).

Almost surely, 2^211072430 is an apocalyptic number.

211072430 is a deficient number, since it is larger than the sum of its proper divisors (168857962).

211072430 is a wasteful number, since it uses less digits than its factorization.

211072430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21107250.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 211072430 is about 14528.3319758326. The cubic root of 211072430 is about 595.4022936705.

The spelling of 211072430 in words is "two hundred eleven million, seventy-two thousand, four hundred thirty".