400616530 has 16 divisors (see below), whose sum is σ = 752462784. Its totient is φ = 153279280.

The previous prime is 400616521. The next prime is 400616533. The reversal of 400616530 is 35616004.

It is a junction number, because it is equal to n+sod(n) for n = 400616495 and 400616504.

It is not an unprimeable number, because it can be changed into a prime (400616533) 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, 870676 + ... + 871135.

It is an arithmetic number, because the mean of its divisors is an integer number (47028924).

Almost surely, 2^400616530 is an apocalyptic number.

400616530 is a deficient number, since it is larger than the sum of its proper divisors (351846254).

400616530 is a wasteful number, since it uses less digits than its factorization.

400616530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741841.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 400616530 is about 20015.4073153658. The cubic root of 400616530 is about 737.1846580602.

The spelling of 400616530 in words is "four hundred million, six hundred sixteen thousand, five hundred thirty".