400220674 has 16 divisors (see below), whose sum is σ = 722203200. Its totient is φ = 162495504.

The previous prime is 400220671. The next prime is 400220683. The reversal of 400220674 is 476022004.

It is not an unprimeable number, because it can be changed into a prime (400220671) 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, 752029 + ... + 752560.

It is an arithmetic number, because the mean of its divisors is an integer number (45137700).

Almost surely, 2^400220674 is an apocalyptic number.

400220674 is a deficient number, since it is larger than the sum of its proper divisors (321982526).

400220674 is a wasteful number, since it uses less digits than its factorization.

400220674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504617.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 400220674 is about 20005.5160893190. The cubic root of 400220674 is about 736.9417698133.

Adding to 400220674 its reverse (476022004), we get a palindrome (876242678).

The spelling of 400220674 in words is "four hundred million, two hundred twenty thousand, six hundred seventy-four".