30750132 has 48 divisors (see below), whose sum is σ = 86320640. Its totient is φ = 8322912.

The previous prime is 30750107. The next prime is 30750133. The reversal of 30750132 is 23105703.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 30750099 and 30750108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30750133) 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, 8038 + ... + 11229.

Almost surely, 2^30750132 is an apocalyptic number.

It is an amenable number.

30750132 is an abundant number, since it is smaller than the sum of its proper divisors (55570508).

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

30750132 is a wasteful number, since it uses less digits than its factorization.

30750132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19300 (or 19298 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 30750132 is about 5545.2801552311. The cubic root of 30750132 is about 313.2917760891.

Adding to 30750132 its reverse (23105703), we get a palindrome (53855835).

The spelling of 30750132 in words is "thirty million, seven hundred fifty thousand, one hundred thirty-two".