400070544 has 80 divisors (see below), whose sum is σ = 1076181120. Its totient is φ = 127912960.

The previous prime is 400070543. The next prime is 400070569. The reversal of 400070544 is 445070004.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (400070543) 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, 231604 + ... + 233324.

It is an arithmetic number, because the mean of its divisors is an integer number (13452264).

Almost surely, 2^400070544 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 400070544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (538090560).

400070544 is an abundant number, since it is smaller than the sum of its proper divisors (676110576).

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

400070544 is a wasteful number, since it uses less digits than its factorization.

400070544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928 (or 1922 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 400070544 is about 20001.7635222497. The cubic root of 400070544 is about 736.8496115684.

The spelling of 400070544 in words is "four hundred million, seventy thousand, five hundred forty-four".