8400030 has 16 divisors (see below), whose sum is σ = 20160144. Its totient is φ = 2240000.

The previous prime is 8400019. The next prime is 8400031. The reversal of 8400030 is 300048.

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

It is a junction number, because it is equal to n+sod(n) for n = 8399982 and 8400009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8400031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139971 + ... + 140030.

It is an arithmetic number, because the mean of its divisors is an integer number (1260009).

Almost surely, 2^8400030 is an apocalyptic number.

8400030 is an abundant number, since it is smaller than the sum of its proper divisors (11760114).

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

8400030 is a wasteful number, since it uses less digits than its factorization.

8400030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280011.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 8400030 is about 2898.2805247250. The cubic root of 8400030 is about 203.2795133618.

Adding to 8400030 its reverse (300048), we get a palindrome (8700078).

The spelling of 8400030 in words is "eight million, four hundred thousand, thirty".