401549824 has 160 divisors (see below), whose sum is σ = 937689984. Its totient is φ = 170311680.

The previous prime is 401549821. The next prime is 401549849. The reversal of 401549824 is 428945104.

It is a super-2 number, since 2×401549824² = 322484522308861952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401549821) 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, 6582754 + ... + 6582814.

Almost surely, 2^401549824 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 401549824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468844992).

401549824 is an abundant number, since it is smaller than the sum of its proper divisors (536140160).

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

401549824 is a wasteful number, since it uses less digits than its factorization.

401549824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 401549824 is about 20038.7081419936. The cubic root of 401549824 is about 737.7566734284.

The spelling of 401549824 in words is "four hundred one million, five hundred forty-nine thousand, eight hundred twenty-four".