400673740 has 48 divisors (see below), whose sum is σ = 867432384. Its totient is φ = 155347200.

The previous prime is 400673737. The next prime is 400673747. The reversal of 400673740 is 47376004.

It is not an unprimeable number, because it can be changed into a prime (400673747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229270 + ... + 231010.

It is an arithmetic number, because the mean of its divisors is an integer number (18071508).

Almost surely, 2^400673740 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 400673740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433716192).

400673740 is an abundant number, since it is smaller than the sum of its proper divisors (466758644).

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

400673740 is a wasteful number, since it uses less digits than its factorization.

400673740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2098 (or 2096 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 400673740 is about 20016.8364133796. The cubic root of 400673740 is about 737.2197475816.

The spelling of 400673740 in words is "four hundred million, six hundred seventy-three thousand, seven hundred forty".