406135028 has 24 divisors (see below), whose sum is σ = 767884488. Its totient is φ = 186840576.

The previous prime is 406135027. The next prime is 406135033. The reversal of 406135028 is 820531604.

It can be written as a sum of positive squares in 4 ways, for example, as 595984 + 405539044 = 772^2 + 20138^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406135027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3800 + ... + 28752.

It is an arithmetic number, because the mean of its divisors is an integer number (31995187).

Almost surely, 2^406135028 is an apocalyptic number.

It is an amenable number.

406135028 is a deficient number, since it is larger than the sum of its proper divisors (361749460).

406135028 is a wasteful number, since it uses less digits than its factorization.

406135028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25283 (or 25281 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 406135028 is about 20152.7920646247. The cubic root of 406135028 is about 740.5541430025.

The spelling of 406135028 in words is "four hundred six million, one hundred thirty-five thousand, twenty-eight".