400073624 has 16 divisors (see below), whose sum is σ = 762436320. Its totient is φ = 196757280.

The previous prime is 400073623. The next prime is 400073741. The reversal of 400073624 is 426370004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 400073593 and 400073602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400073623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409424 + ... + 410399.

It is an arithmetic number, because the mean of its divisors is an integer number (47652270).

Almost surely, 2^400073624 is an apocalyptic number.

It is an amenable number.

400073624 is a deficient number, since it is larger than the sum of its proper divisors (362362696).

400073624 is a wasteful number, since it uses less digits than its factorization.

400073624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819890 (or 819886 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 400073624 is about 20001.8405153126. The cubic root of 400073624 is about 736.8515024774.

The spelling of 400073624 in words is "four hundred million, seventy-three thousand, six hundred twenty-four".