401173500 has 192 divisors, whose sum is σ = 1438295040. Its totient is φ = 84614400.

The previous prime is 401173489. The next prime is 401173537. The reversal of 401173500 is 5371104.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 135031 + ... + 137969.

It is an arithmetic number, because the mean of its divisors is an integer number (7491120).

Almost surely, 2^401173500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401173500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719147520).

401173500 is an abundant number, since it is smaller than the sum of its proper divisors (1037121540).

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

401173500 is a wasteful number, since it uses less digits than its factorization.

401173500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981 (or 2969 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 401173500 is about 20029.3160142827. The cubic root of 401173500 is about 737.5261314115.

The spelling of 401173500 in words is "four hundred one million, one hundred seventy-three thousand, five hundred".