401593730 has 8 divisors (see below), whose sum is σ = 722868732. Its totient is φ = 160637488.

The previous prime is 401593693. The next prime is 401593739. The reversal of 401593730 is 37395104.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 390418081 + 11175649 = 19759^2 + 3343^2 .

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

It is a super-2 number, since 2×401593730² = 322555047950625800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401593739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20079677 + ... + 20079696.

Almost surely, 2^401593730 is an apocalyptic number.

401593730 is a deficient number, since it is larger than the sum of its proper divisors (321275002).

401593730 is a wasteful number, since it uses less digits than its factorization.

401593730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40159380.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 401593730 is about 20039.8036417526. The cubic root of 401593730 is about 737.7835615521.

The spelling of 401593730 in words is "four hundred one million, five hundred ninety-three thousand, seven hundred thirty".