211920478 has 32 divisors (see below), whose sum is σ = 397555200. Its totient is φ = 82308960.

The previous prime is 211920461. The next prime is 211920479. The reversal of 211920478 is 874029112.

211920478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211920479) 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, 51775 + ... + 55717.

It is an arithmetic number, because the mean of its divisors is an integer number (12423600).

Almost surely, 2^211920478 is an apocalyptic number.

211920478 is a deficient number, since it is larger than the sum of its proper divisors (185634722).

211920478 is a wasteful number, since it uses less digits than its factorization.

211920478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4312.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 211920478 is about 14557.4887257384. The cubic root of 211920478 is about 596.1986316752.

The spelling of 211920478 in words is "two hundred eleven million, nine hundred twenty thousand, four hundred seventy-eight".