30440046 has 64 divisors (see below), whose sum is σ = 75575808. Its totient is φ = 7959168.

The previous prime is 30440041. The next prime is 30440083. The reversal of 30440046 is 64004403.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30440041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107421 + ... + 107703.

It is an arithmetic number, because the mean of its divisors is an integer number (1180872).

Almost surely, 2^30440046 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30440046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37787904).

30440046 is an abundant number, since it is smaller than the sum of its proper divisors (45135762).

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

30440046 is a wasteful number, since it uses less digits than its factorization.

30440046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 30440046 is about 5517.2498583987. The cubic root of 30440046 is about 312.2351325816.

Adding to 30440046 its reverse (64004403), we get a palindrome (94444449).

The spelling of 30440046 in words is "thirty million, four hundred forty thousand, forty-six".