211473020 has 24 divisors (see below), whose sum is σ = 484465968. Its totient is φ = 76899200.

The previous prime is 211473007. The next prime is 211473023. The reversal of 211473020 is 20374112.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 211472983 and 211473001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211473023) 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, 480401 + ... + 480840.

It is an arithmetic number, because the mean of its divisors is an integer number (20186082).

Almost surely, 2^211473020 is an apocalyptic number.

211473020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211473020 is an abundant number, since it is smaller than the sum of its proper divisors (272992948).

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

211473020 is a wasteful number, since it uses less digits than its factorization.

211473020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961261 (or 961259 counting only the distinct ones).

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

The square root of 211473020 is about 14542.1119511576. Note that the first 3 decimals coincide. The cubic root of 211473020 is about 595.7787228653.

The spelling of 211473020 in words is "two hundred eleven million, four hundred seventy-three thousand, twenty".