30302040 has 64 divisors (see below), whose sum is σ = 94867200. Its totient is φ = 7728512.

The previous prime is 30302033. The next prime is 30302053. The reversal of 30302040 is 4020303.

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 15 ways as a sum of consecutive naturals, for example, 2730 + ... + 8249.

It is an arithmetic number, because the mean of its divisors is an integer number (1482300).

Almost surely, 2^30302040 is an apocalyptic number.

30302040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30302040 is an abundant number, since it is smaller than the sum of its proper divisors (64565160).

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

30302040 is a wasteful number, since it uses less digits than its factorization.

30302040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11016 (or 11012 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 30302040 is about 5504.7288761573. The cubic root of 30302040 is about 311.7625576744.

Adding to 30302040 its reverse (4020303), we get a palindrome (34322343).

The spelling of 30302040 in words is "thirty million, three hundred two thousand, forty".