401424436 has 48 divisors (see below), whose sum is σ = 835591680. Its totient is φ = 165160800.

The previous prime is 401424431. The next prime is 401424461. The reversal of 401424436 is 634424104.

It is a super-2 number, since 2×401424436² = 322283155635836192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401424431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68211 + ... + 73861.

It is an arithmetic number, because the mean of its divisors is an integer number (17408160).

Almost surely, 2^401424436 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 401424436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417795840).

401424436 is an abundant number, since it is smaller than the sum of its proper divisors (434167244).

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

401424436 is a wasteful number, since it uses less digits than its factorization.

401424436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5764 (or 5762 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 401424436 is about 20035.5792529190. The cubic root of 401424436 is about 737.6798747694.

The spelling of 401424436 in words is "four hundred one million, four hundred twenty-four thousand, four hundred thirty-six".