401630 has 8 divisors (see below), whose sum is σ = 722952. Its totient is φ = 160648.

The previous prime is 401629. The next prime is 401651. The reversal of 401630 is 36104.

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

It is a super-2 number, since 2×401630² = 322613313800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20072 + ... + 20091.

It is an arithmetic number, because the mean of its divisors is an integer number (90369).

2⁴⁰¹⁶³⁰ is an apocalyptic number.

401630 is a deficient number, since it is larger than the sum of its proper divisors (321322).

401630 is a wasteful number, since it uses less digits than its factorization.

401630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40170.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 401630 is about 633.7428500583. The cubic root of 401630 is about 73.7805771896.

Adding to 401630 its reverse (36104), we get a palindrome (437734).

The spelling of 401630 in words is "four hundred one thousand, six hundred thirty".