213855280 has 40 divisors (see below), whose sum is σ = 514364400. Its totient is φ = 82591488.

The previous prime is 213855277. The next prime is 213855283. The reversal of 213855280 is 82558312.

213855280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (213855277) and next prime (213855283).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (213855283) 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, 43770 + ... + 48409.

It is an arithmetic number, because the mean of its divisors is an integer number (12859110).

Almost surely, 2^213855280 is an apocalyptic number.

213855280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213855280 is an abundant number, since it is smaller than the sum of its proper divisors (300509120).

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

213855280 is a wasteful number, since it uses less digits than its factorization.

213855280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92221 (or 92215 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 213855280 is about 14623.7915740071. The cubic root of 213855280 is about 598.0075389705.

The spelling of 213855280 in words is "two hundred thirteen million, eight hundred fifty-five thousand, two hundred eighty".