30051420 has 48 divisors (see below), whose sum is σ = 96165888. Its totient is φ = 6868800.

The previous prime is 30051419. The next prime is 30051433. The reversal of 30051420 is 2415003.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30051420.

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, 35356 + ... + 36195.

It is an arithmetic number, because the mean of its divisors is an integer number (2003456).

Almost surely, 2^30051420 is an apocalyptic number.

30051420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30051420 is an abundant number, since it is smaller than the sum of its proper divisors (66114468).

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

30051420 is a wasteful number, since it uses less digits than its factorization.

30051420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71570 (or 71568 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 30051420 is about 5481.9175477200. The cubic root of 30051420 is about 310.9006758155.

Adding to 30051420 its reverse (2415003), we get a palindrome (32466423).

The spelling of 30051420 in words is "thirty million, fifty-one thousand, four hundred twenty".