401773128 has 64 divisors (see below), whose sum is σ = 1018828800. Its totient is φ = 132019200.

The previous prime is 401773081. The next prime is 401773129. The reversal of 401773128 is 821377104.

It is a happy number.

It is a super-2 number, since 2×401773128² = 322843292765808768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401773129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1001728 + ... + 1002128.

It is an arithmetic number, because the mean of its divisors is an integer number (15919200).

Almost surely, 2^401773128 is an apocalyptic number.

It is an amenable number.

401773128 is an abundant number, since it is smaller than the sum of its proper divisors (617055672).

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

401773128 is a wasteful number, since it uses less digits than its factorization.

401773128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 401773128 is about 20044.2791838469. The cubic root of 401773128 is about 737.8934048936.

The spelling of 401773128 in words is "four hundred one million, seven hundred seventy-three thousand, one hundred twenty-eight".