401628807 has 16 divisors (see below), whose sum is σ = 595457280. Its totient is φ = 267549336.

The previous prime is 401628803. The next prime is 401628889. The reversal of 401628807 is 708826104.

It is not a de Polignac number, because 401628807 - 2² = 401628803 is a prime.

It is a super-2 number, since 2×401628807² = 322611397224486498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401628803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36238 + ... + 46004.

It is an arithmetic number, because the mean of its divisors is an integer number (37216080).

Almost surely, 2^401628807 is an apocalyptic number.

401628807 is a deficient number, since it is larger than the sum of its proper divisors (193828473).

401628807 is a wasteful number, since it uses less digits than its factorization.

401628807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11299 (or 11293 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 401628807 is about 20040.6788058688. The cubic root of 401628807 is about 737.8050413700.

It can be divided in two parts, 4016 and 28807, that added together give a palindrome (32823).

The spelling of 401628807 in words is "four hundred one million, six hundred twenty-eight thousand, eight hundred seven".