401411720 has 32 divisors (see below), whose sum is σ = 917988120. Its totient is φ = 157931520.

The previous prime is 401411713. The next prime is 401411723. The reversal of 401411720 is 27114104.

It can be written as a sum of positive squares in 4 ways, for example, as 122722084 + 278689636 = 11078^2 + 16694^2 .

It is a super-2 number, since 2×401411720² = 322262737906716800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 401411692 and 401411701.

It is not an unprimeable number, because it can be changed into a prime (401411723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79817 + ... + 84696.

Almost surely, 2^401411720 is an apocalyptic number.

401411720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401411720 is an abundant number, since it is smaller than the sum of its proper divisors (516576400).

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

401411720 is a wasteful number, since it uses less digits than its factorization.

401411720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164585 (or 164581 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 401411720 is about 20035.2619149339. The cubic root of 401411720 is about 737.6720854775.

Adding to 401411720 its reverse (27114104), we get a palindrome (428525824).

The spelling of 401411720 in words is "four hundred one million, four hundred eleven thousand, seven hundred twenty".