401728492 has 24 divisors (see below), whose sum is σ = 767612160. Its totient is φ = 182442960.

The previous prime is 401728423. The next prime is 401728501. The reversal of 401728492 is 294827104.

It is a super-2 number, since 2×401728492² = 322771562569188128, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56809 + ... + 63487.

It is an arithmetic number, because the mean of its divisors is an integer number (31983840).

Almost surely, 2^401728492 is an apocalyptic number.

It is an amenable number.

401728492 is a deficient number, since it is larger than the sum of its proper divisors (365883668).

401728492 is a wasteful number, since it uses less digits than its factorization.

401728492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8061 (or 8059 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 401728492 is about 20043.1657180197. The cubic root of 401728492 is about 737.8660778380.

The spelling of 401728492 in words is "four hundred one million, seven hundred twenty-eight thousand, four hundred ninety-two".