30405452 has 48 divisors (see below), whose sum is σ = 70253568. Its totient is φ = 11147520.

The previous prime is 30405443. The next prime is 30405461. The reversal of 30405452 is 25450403.

It is an interprime number because it is at equal distance from previous prime (30405443) and next prime (30405461).

It is a super-2 number, since 2×30405452² = 1848983022648608, 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, 2333 + ... + 8139.

It is an arithmetic number, because the mean of its divisors is an integer number (1463616).

Almost surely, 2^30405452 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30405452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35126784).

30405452 is an abundant number, since it is smaller than the sum of its proper divisors (39848116).

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

30405452 is a wasteful number, since it uses less digits than its factorization.

30405452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5846 (or 5844 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 30405452 is about 5514.1138907353. The cubic root of 30405452 is about 312.1168064728.

Adding to 30405452 its reverse (25450403), we get a palindrome (55855855).

The spelling of 30405452 in words is "thirty million, four hundred five thousand, four hundred fifty-two".