133861072 has 20 divisors (see below), whose sum is σ = 262483200. Its totient is φ = 66123488.

The previous prime is 133861037. The next prime is 133861087. The reversal of 133861072 is 270168331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49072 + ... + 51727.

It is an arithmetic number, because the mean of its divisors is an integer number (13124160).

Almost surely, 2^133861072 is an apocalyptic number.

It is an amenable number.

133861072 is a deficient number, since it is larger than the sum of its proper divisors (128622128).

133861072 is a wasteful number, since it uses less digits than its factorization.

133861072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100890 (or 100884 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 133861072 is about 11569.8345709867. The cubic root of 133861072 is about 511.5460861454.

The spelling of 133861072 in words is "one hundred thirty-three million, eight hundred sixty-one thousand, seventy-two".