170870428 has 12 divisors (see below), whose sum is σ = 299736472. Its totient is φ = 85231440.

The previous prime is 170870423. The next prime is 170870449. The reversal of 170870428 is 824078071.

170870428 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 (170870423) 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, 49050 + ... + 52417.

Almost surely, 2^170870428 is an apocalyptic number.

It is an amenable number.

170870428 is a deficient number, since it is larger than the sum of its proper divisors (128866044).

170870428 is a wasteful number, since it uses less digits than its factorization.

170870428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101892 (or 101890 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 170870428 is about 13071.7415825130. The cubic root of 170870428 is about 554.9096820266.

The spelling of 170870428 in words is "one hundred seventy million, eight hundred seventy thousand, four hundred twenty-eight".