30051864 has 48 divisors (see below), whose sum is σ = 83701800. Its totient is φ = 9990432.

The previous prime is 30051809. The next prime is 30051871. The reversal of 30051864 is 46815003.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a super-2 number, since 2×30051864² = 1806229059748992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80382 + ... + 80754.

Almost surely, 2^30051864 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 30051864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41850900).

30051864 is an abundant number, since it is smaller than the sum of its proper divisors (53649936).

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

30051864 is an equidigital number, since it uses as much as digits as its factorization.

30051864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 30051864 is about 5481.9580443488. The cubic root of 30051864 is about 310.9022069603.

Adding to 30051864 its reverse (46815003), we get a palindrome (76866867).

The spelling of 30051864 in words is "thirty million, fifty-one thousand, eight hundred sixty-four".