401730 has 32 divisors (see below), whose sum is σ = 1102464. Its totient is φ = 91776.

The previous prime is 401711. The next prime is 401743. The reversal of 401730 is 37104.

It is a super-2 number, since 2×401730² = 322773985800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an Ulam number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747 + ... + 1166.

It is an arithmetic number, because the mean of its divisors is an integer number (34452).

2⁴⁰¹⁷³⁰ is an apocalyptic number.

401730 is an abundant number, since it is smaller than the sum of its proper divisors (700734).

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

401730 is a wasteful number, since it uses less digits than its factorization.

401730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 401730 is about 633.8217415015. The cubic root of 401730 is about 73.7867001099.

Adding to 401730 its reverse (37104), we get a palindrome (438834).

It can be divided in two parts, 40 and 1730, that added together give a triangular number (1770 = T₅₉).

The spelling of 401730 in words is "four hundred one thousand, seven hundred thirty".