30821052 has 24 divisors (see below), whose sum is σ = 72076032. Its totient is φ = 10250800.

The previous prime is 30821047. The next prime is 30821057. The reversal of 30821052 is 25012803.

It is an interprime number because it is at equal distance from previous prime (30821047) and next prime (30821057).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30821057) 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, 3277 + ... + 8507.

It is an arithmetic number, because the mean of its divisors is an integer number (3003168).

Almost surely, 2^30821052 is an apocalyptic number.

It is an amenable number.

30821052 is an abundant number, since it is smaller than the sum of its proper divisors (41254980).

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

30821052 is a wasteful number, since it uses less digits than its factorization.

30821052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5729 (or 5727 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 30821052 is about 5551.6710997681. The cubic root of 30821052 is about 313.5324427353.

Adding to 30821052 its reverse (25012803), we get a palindrome (55833855).

The spelling of 30821052 in words is "thirty million, eight hundred twenty-one thousand, fifty-two".