30146440 has 64 divisors (see below), whose sum is σ = 73560960. Its totient is φ = 11074560.

The previous prime is 30146437. The next prime is 30146443. The reversal of 30146440 is 4464103.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30146437) and next prime (30146443).

It is not an unprimeable number, because it can be changed into a prime (30146443) 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, 28725 + ... + 29755.

It is an arithmetic number, because the mean of its divisors is an integer number (1149390).

Almost surely, 2^30146440 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 30146440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36780480).

30146440 is an abundant number, since it is smaller than the sum of its proper divisors (43414520).

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

30146440 is a wasteful number, since it uses less digits than its factorization.

30146440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102 (or 1098 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 30146440 is about 5490.5773831174. The cubic root of 30146440 is about 311.2280114357.

The spelling of 30146440 in words is "thirty million, one hundred forty-six thousand, four hundred forty".