133534890 has 24 divisors (see below), whose sum is σ = 347190948. Its totient is φ = 35609280.

The previous prime is 133534873. The next prime is 133534897. The reversal of 133534890 is 98435331.

133534890 is a `hidden beast` number, since 1 + 33 + 534 + 8 + 90 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 131400369 + 2134521 = 11463^2 + 1461^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (133534897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 741771 + ... + 741950.

Almost surely, 2^133534890 is an apocalyptic number.

133534890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133534890 is an abundant number, since it is smaller than the sum of its proper divisors (213656058).

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

133534890 is a wasteful number, since it uses less digits than its factorization.

133534890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483734 (or 1483731 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 133534890 is about 11555.7297476187. The cubic root of 133534890 is about 511.1302499485.

The spelling of 133534890 in words is "one hundred thirty-three million, five hundred thirty-four thousand, eight hundred ninety".