133720370 has 32 divisors (see below), whose sum is σ = 275498496. Its totient is φ = 45777600.

The previous prime is 133720369. The next prime is 133720403. The reversal of 133720370 is 73027331.

It is a happy number.

It is a super-2 number, since 2×133720370² = 35762274705873800, which contains 22 as substring.

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, 70535 + ... + 72405.

It is an arithmetic number, because the mean of its divisors is an integer number (8609328).

Almost surely, 2^133720370 is an apocalyptic number.

133720370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133720370 is an abundant number, since it is smaller than the sum of its proper divisors (141778126).

133720370 is a wasteful number, since it uses less digits than its factorization.

133720370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906.

The product of its (nonzero) digits is 2646, while the sum is 26.

The square root of 133720370 is about 11563.7524186572. The cubic root of 133720370 is about 511.3667938163.

The spelling of 133720370 in words is "one hundred thirty-three million, seven hundred twenty thousand, three hundred seventy".