400828733 has 4 divisors (see below), whose sum is σ = 411661980. Its totient is φ = 389995488.

The previous prime is 400828711. The next prime is 400828781. The reversal of 400828733 is 337828004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 373339684 + 27489049 = 19322^2 + 5243^2 .

It is a cyclic number.

It is not a de Polignac number, because 400828733 - 2²⁴ = 384051517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400828693 and 400828702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400828033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5416568 + ... + 5416641.

It is an arithmetic number, because the mean of its divisors is an integer number (102915495).

Almost surely, 2^400828733 is an apocalyptic number.

It is an amenable number.

400828733 is a deficient number, since it is larger than the sum of its proper divisors (10833247).

400828733 is a wasteful number, since it uses less digits than its factorization.

400828733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10833246.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 400828733 is about 20020.7076048775. The cubic root of 400828733 is about 737.3147951298.

The spelling of 400828733 in words is "four hundred million, eight hundred twenty-eight thousand, seven hundred thirty-three".