133355730 has 32 divisors (see below), whose sum is σ = 320400000. Its totient is φ = 35523072.

The previous prime is 133355711. The next prime is 133355749. The reversal of 133355730 is 37553331.

It is an interprime number because it is at equal distance from previous prime (133355711) and next prime (133355749).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35691 + ... + 39249.

It is an arithmetic number, because the mean of its divisors is an integer number (10012500).

Almost surely, 2^133355730 is an apocalyptic number.

133355730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133355730 is an abundant number, since it is smaller than the sum of its proper divisors (187044270).

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

133355730 is a wasteful number, since it uses less digits than its factorization.

133355730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818.

The product of its (nonzero) digits is 14175, while the sum is 30.

The square root of 133355730 is about 11547.9751471849. The cubic root of 133355730 is about 510.9015579558.

The spelling of 133355730 in words is "one hundred thirty-three million, three hundred fifty-five thousand, seven hundred thirty".