400261228 has 12 divisors (see below), whose sum is σ = 704328352. Its totient is φ = 199024560.

The previous prime is 400261223. The next prime is 400261231. The reversal of 400261228 is 822162004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (400261223) 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, 275700 + ... + 277147.

Almost surely, 2^400261228 is an apocalyptic number.

It is an amenable number.

400261228 is a deficient number, since it is larger than the sum of its proper divisors (304067124).

400261228 is a wasteful number, since it uses less digits than its factorization.

400261228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553032 (or 553030 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 400261228 is about 20006.5296340970. The cubic root of 400261228 is about 736.9666601877.

The spelling of 400261228 in words is "four hundred million, two hundred sixty-one thousand, two hundred twenty-eight".