211372420 has 48 divisors (see below), whose sum is σ = 508128768. Its totient is φ = 72351360.

The previous prime is 211372393. The next prime is 211372429. The reversal of 211372420 is 24273112.

It is a junction number, because it is equal to n+sod(n) for n = 211372391 and 211372400.

It is not an unprimeable number, because it can be changed into a prime (211372429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147829 + ... + 149251.

It is an arithmetic number, because the mean of its divisors is an integer number (10586016).

Almost surely, 2^211372420 is an apocalyptic number.

211372420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211372420 is an abundant number, since it is smaller than the sum of its proper divisors (296756348).

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

211372420 is a wasteful number, since it uses less digits than its factorization.

211372420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500 (or 2498 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 211372420 is about 14538.6526198269. The cubic root of 211372420 is about 595.6842350894.

The spelling of 211372420 in words is "two hundred eleven million, three hundred seventy-two thousand, four hundred twenty".