285429506 has 4 divisors (see below), whose sum is σ = 428144262. Its totient is φ = 142714752.

The previous prime is 285429461. The next prime is 285429509. The reversal of 285429506 is 605924582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 153983281 + 131446225 = 12409^2 + 11465^2 .

It is not an unprimeable number, because it can be changed into a prime (285429509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71357375 + ... + 71357378.

Almost surely, 2^285429506 is an apocalyptic number.

285429506 is a deficient number, since it is larger than the sum of its proper divisors (142714756).

285429506 is a wasteful number, since it uses less digits than its factorization.

285429506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142714755.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 285429506 is about 16894.6590968862. The cubic root of 285429506 is about 658.4148568095.

The spelling of 285429506 in words is "two hundred eighty-five million, four hundred twenty-nine thousand, five hundred six".