30100440 has 32 divisors (see below), whose sum is σ = 90301680. Its totient is φ = 8026752.

The previous prime is 30100417. The next prime is 30100453. The reversal of 30100440 is 4400103.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125299 + ... + 125538.

Almost surely, 2^30100440 is an apocalyptic number.

30100440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30100440 is an abundant number, since it is smaller than the sum of its proper divisors (60201240).

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

30100440 is a wasteful number, since it uses less digits than its factorization.

30100440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250851 (or 250847 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 30100440 is about 5486.3867891355. The cubic root of 30100440 is about 311.0696314691.

Adding to 30100440 its reverse (4400103), we get a palindrome (34500543).

The spelling of 30100440 in words is "thirty million, one hundred thousand, four hundred forty".