133638850 has 24 divisors (see below), whose sum is σ = 248912640. Its totient is φ = 53381520.

The previous prime is 133638847. The next prime is 133638851. The reversal of 133638850 is 58836331.

It is not an unprimeable number, because it can be changed into a prime (133638851) 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, 47791 + ... + 50509.

It is an arithmetic number, because the mean of its divisors is an integer number (10371360).

Almost surely, 2^133638850 is an apocalyptic number.

133638850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133638850 is a deficient number, since it is larger than the sum of its proper divisors (115273790).

133638850 is a wasteful number, since it uses less digits than its factorization.

133638850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714 (or 3709 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 133638850 is about 11560.2270738944. The cubic root of 133638850 is about 511.2628577817.

It can be divided in two parts, 1336 and 38850, that added together give a triangular number (40186 = T₂₈₃).

The spelling of 133638850 in words is "one hundred thirty-three million, six hundred thirty-eight thousand, eight hundred fifty".