133972620 has 48 divisors (see below), whose sum is σ = 376034400. Its totient is φ = 35639296.

The previous prime is 133972613. The next prime is 133972627. The reversal of 133972620 is 26279331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (133972613) and next prime (133972627).

It is not an unprimeable number, because it can be changed into a prime (133972627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24454 + ... + 29426.

It is an arithmetic number, because the mean of its divisors is an integer number (7834050).

Almost surely, 2^133972620 is an apocalyptic number.

133972620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133972620 is an abundant number, since it is smaller than the sum of its proper divisors (242061780).

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

133972620 is a wasteful number, since it uses less digits than its factorization.

133972620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5434 (or 5432 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 133972620 is about 11574.6542064979. The cubic root of 133972620 is about 511.6881391440.

The spelling of 133972620 in words is "one hundred thirty-three million, nine hundred seventy-two thousand, six hundred twenty".