135378890 has 16 divisors (see below), whose sum is σ = 244961280. Its totient is φ = 53867280.

The previous prime is 135378889. The next prime is 135379001. The reversal of 135378890 is 98873531.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 33530 + ... + 37349.

It is an arithmetic number, because the mean of its divisors is an integer number (15310080).

Almost surely, 2^135378890 is an apocalyptic number.

135378890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135378890 is a deficient number, since it is larger than the sum of its proper divisors (109582390).

135378890 is a wasteful number, since it uses less digits than its factorization.

135378890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71077.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 135378890 is about 11635.2434439508. The cubic root of 135378890 is about 513.4722563038.

The spelling of 135378890 in words is "one hundred thirty-five million, three hundred seventy-eight thousand, eight hundred ninety".