400273016 has 64 divisors (see below), whose sum is σ = 893985120. Its totient is φ = 165611520.

The previous prime is 400273001. The next prime is 400273021. The reversal of 400273016 is 610372004.

It is a junction number, because it is equal to n+sod(n) for n = 400272982 and 400273000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81116 + ... + 85908.

Almost surely, 2^400273016 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 400273016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446992560).

400273016 is an abundant number, since it is smaller than the sum of its proper divisors (493712104).

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

400273016 is a wasteful number, since it uses less digits than its factorization.

400273016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4896 (or 4892 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 400273016 is about 20006.8242357452. The cubic root of 400273016 is about 736.9738948610.

The spelling of 400273016 in words is "four hundred million, two hundred seventy-three thousand, sixteen".