400227740 has 24 divisors (see below), whose sum is σ = 916885872. Its totient is φ = 145537280.

The previous prime is 400227733. The next prime is 400227757. The reversal of 400227740 is 47722004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 909389 + ... + 909828.

It is an arithmetic number, because the mean of its divisors is an integer number (38203578).

Almost surely, 2^400227740 is an apocalyptic number.

It is an amenable number.

400227740 is an abundant number, since it is smaller than the sum of its proper divisors (516658132).

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

400227740 is a wasteful number, since it uses less digits than its factorization.

400227740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819237 (or 1819235 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 400227740 is about 20005.6926898321. The cubic root of 400227740 is about 736.9461067540.

Adding to 400227740 its reverse (47722004), we get a palindrome (447949744).

The spelling of 400227740 in words is "four hundred million, two hundred twenty-seven thousand, seven hundred forty".