213705078 has 8 divisors (see below), whose sum is σ = 427410168. Its totient is φ = 71235024.

The previous prime is 213705077. The next prime is 213705119. The reversal of 213705078 is 870507312.

It is a sphenic number, since it is the product of 3 distinct primes.

213705078 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213705077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17808751 + ... + 17808762.

It is an arithmetic number, because the mean of its divisors is an integer number (53426271).

Almost surely, 2^213705078 is an apocalyptic number.

213705078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

213705078 is a wasteful number, since it uses less digits than its factorization.

213705078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35617518.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 213705078 is about 14618.6551365028. The cubic root of 213705078 is about 597.8675019550.

The spelling of 213705078 in words is "two hundred thirteen million, seven hundred five thousand, seventy-eight".