135646390 has 32 divisors (see below), whose sum is σ = 274959360. Its totient is φ = 47733600.

The previous prime is 135646363. The next prime is 135646393. The reversal of 135646390 is 93646531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135646393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16480 + ... + 23299.

It is an arithmetic number, because the mean of its divisors is an integer number (8592480).

Almost surely, 2^135646390 is an apocalyptic number.

135646390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135646390 is an abundant number, since it is smaller than the sum of its proper divisors (139312970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135646390 is a wasteful number, since it uses less digits than its factorization.

135646390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39828.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 135646390 is about 11646.7330183189. The cubic root of 135646390 is about 513.8102298738.

The spelling of 135646390 in words is "one hundred thirty-five million, six hundred forty-six thousand, three hundred ninety".