213455340 has 72 divisors (see below), whose sum is σ = 739982880. Its totient is φ = 48789504.

The previous prime is 213455321. The next prime is 213455351. The reversal of 213455340 is 43554312.

213455340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83445 + ... + 85964.

It is an arithmetic number, because the mean of its divisors is an integer number (10277540).

Almost surely, 2^213455340 is an apocalyptic number.

213455340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213455340 is an abundant number, since it is smaller than the sum of its proper divisors (526527540).

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

213455340 is a wasteful number, since it uses less digits than its factorization.

213455340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169431 (or 169426 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 213455340 is about 14610.1108825361. The cubic root of 213455340 is about 597.6345197610.

The spelling of 213455340 in words is "two hundred thirteen million, four hundred fifty-five thousand, three hundred forty".