538091236 has 24 divisors (see below), whose sum is σ = 952633080. Its totient is φ = 265920000.

The previous prime is 538091227. The next prime is 538091237. The reversal of 538091236 is 632190835.

It can be written as a sum of positive squares in 4 ways, for example, as 129600 + 537961636 = 360^2 + 23194^2 .

It is a junction number, because it is equal to n+sod(n) for n = 538091195 and 538091204.

It is not an unprimeable number, because it can be changed into a prime (538091237) 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, 447436 + ... + 448636.

It is an arithmetic number, because the mean of its divisors is an integer number (39693045).

Almost surely, 2^538091236 is an apocalyptic number.

It is an amenable number.

538091236 is a deficient number, since it is larger than the sum of its proper divisors (414541844).

538091236 is a wasteful number, since it uses less digits than its factorization.

538091236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2415 (or 2413 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 538091236 is about 23196.7936577450. The cubic root of 538091236 is about 813.3646739842.

The spelling of 538091236 in words is "five hundred thirty-eight million, ninety-one thousand, two hundred thirty-six".