133758690 has 32 divisors (see below), whose sum is σ = 345715776. Its totient is φ = 32925120.

The previous prime is 133758673. The next prime is 133758719. The reversal of 133758690 is 96857331.

It is a super-2 number, since 2×133758690² = 35782774301032200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171096 + ... + 171875.

It is an arithmetic number, because the mean of its divisors is an integer number (10803618).

Almost surely, 2^133758690 is an apocalyptic number.

133758690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133758690 is an abundant number, since it is smaller than the sum of its proper divisors (211957086).

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

133758690 is a wasteful number, since it uses less digits than its factorization.

133758690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342994.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 133758690 is about 11565.4092015804. The cubic root of 133758690 is about 511.4156362976.

The spelling of 133758690 in words is "one hundred thirty-three million, seven hundred fifty-eight thousand, six hundred ninety".