401427730 has 32 divisors (see below), whose sum is σ = 799072128. Its totient is φ = 143971200.

The previous prime is 401427721. The next prime is 401427731. The reversal of 401427730 is 37724104.

It is a super-2 number, since 2×401427730² = 322288444825905800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401427731) 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, 16966 + ... + 33025.

It is an arithmetic number, because the mean of its divisors is an integer number (24971004).

Almost surely, 2^401427730 is an apocalyptic number.

401427730 is a deficient number, since it is larger than the sum of its proper divisors (397644398).

401427730 is a wasteful number, since it uses less digits than its factorization.

401427730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50082.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 401427730 is about 20035.6614565130. The cubic root of 401427730 is about 737.6818925098.

The spelling of 401427730 in words is "four hundred one million, four hundred twenty-seven thousand, seven hundred thirty".