201670434 has 48 divisors (see below), whose sum is σ = 500640192. Its totient is φ = 57474144.

The previous prime is 201670433. The next prime is 201670471. The reversal of 201670434 is 434076102.

It is a junction number, because it is equal to n+sod(n) for n = 201670398 and 201670407.

It is not an unprimeable number, because it can be changed into a prime (201670433) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54012 + ... + 57624.

It is an arithmetic number, because the mean of its divisors is an integer number (10430004).

Almost surely, 2^201670434 is an apocalyptic number.

201670434 is an abundant number, since it is smaller than the sum of its proper divisors (298969758).

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

201670434 is a wasteful number, since it uses less digits than its factorization.

201670434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4071 (or 4068 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 201670434 is about 14201.0715792858. The cubic root of 201670434 is about 586.4271619786.

The spelling of 201670434 in words is "two hundred one million, six hundred seventy thousand, four hundred thirty-four".