30287952 has 40 divisors (see below), whose sum is σ = 86938880. Its totient is φ = 10095840.

The previous prime is 30287951. The next prime is 30287993. The reversal of 30287952 is 25978203.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30287951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34624 + ... + 35487.

It is an arithmetic number, because the mean of its divisors is an integer number (2173472).

Almost surely, 2^30287952 is an apocalyptic number.

It is an amenable number.

30287952 is an abundant number, since it is smaller than the sum of its proper divisors (56650928).

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

30287952 is a wasteful number, since it uses less digits than its factorization.

30287952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70128 (or 70116 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 30287952 is about 5503.4491003370. The cubic root of 30287952 is about 311.7142353860.

The spelling of 30287952 in words is "thirty million, two hundred eighty-seven thousand, nine hundred fifty-two".