135788890 has 16 divisors (see below), whose sum is σ = 251026632. Its totient is φ = 52847424.

The previous prime is 135788881. The next prime is 135788893. The reversal of 135788890 is 98887531.

It can be written as a sum of positive squares in 4 ways, for example, as 135559449 + 229441 = 11643^2 + 479^2 .

It is not an unprimeable number, because it can be changed into a prime (135788893) 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, 183129 + ... + 183868.

Almost surely, 2^135788890 is an apocalyptic number.

135788890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135788890 is a deficient number, since it is larger than the sum of its proper divisors (115237742).

135788890 is a wasteful number, since it uses less digits than its factorization.

135788890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367041.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 135788890 is about 11652.8490078607. The cubic root of 135788890 is about 513.9900904992.

The spelling of 135788890 in words is "one hundred thirty-five million, seven hundred eighty-eight thousand, eight hundred ninety".