401015502 has 64 divisors (see below), whose sum is σ = 910003200. Its totient is φ = 130870080.

The previous prime is 401015479. The next prime is 401015513. The reversal of 401015502 is 205510104.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 980274 + ... + 980682.

It is an arithmetic number, because the mean of its divisors is an integer number (14218800).

Almost surely, 2^401015502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401015502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455001600).

401015502 is an abundant number, since it is smaller than the sum of its proper divisors (508987698).

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

401015502 is a wasteful number, since it uses less digits than its factorization.

401015502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758 (or 752 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 401015502 is about 20025.3714572290. The cubic root of 401015502 is about 737.4292963723.

Adding to 401015502 its reverse (205510104), we get a palindrome (606525606).

The spelling of 401015502 in words is "four hundred one million, fifteen thousand, five hundred two".