401428938 has 8 divisors (see below), whose sum is σ = 802857888. Its totient is φ = 133809644.

The previous prime is 401428921. The next prime is 401428957. The reversal of 401428938 is 839824104.

It is a sphenic number, since it is the product of 3 distinct primes.

401428938 is an admirable number.

It is a super-2 number, since 2×401428938² = 322290384527615688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401428896 and 401428905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33452406 + ... + 33452417.

It is an arithmetic number, because the mean of its divisors is an integer number (100357236).

Almost surely, 2^401428938 is an apocalyptic number.

401428938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

401428938 is a wasteful number, since it uses less digits than its factorization.

401428938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66904828.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 401428938 is about 20035.6916027374. The cubic root of 401428938 is about 737.6826324676.

The spelling of 401428938 in words is "four hundred one million, four hundred twenty-eight thousand, nine hundred thirty-eight".