400530735 has 96 divisors (see below), whose sum is σ = 819486720. Its totient is φ = 178848000.

The previous prime is 400530731. The next prime is 400530743. The reversal of 400530735 is 537035004.

It is a happy number.

It is not a de Polignac number, because 400530735 - 2² = 400530731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400530699 and 400530708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400530731) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 347410 + ... + 348560.

It is an arithmetic number, because the mean of its divisors is an integer number (8536320).

Almost surely, 2^400530735 is an apocalyptic number.

400530735 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

400530735 is an abundant number, since it is smaller than the sum of its proper divisors (418955985).

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

400530735 is a wasteful number, since it uses less digits than its factorization.

400530735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229 (or 1226 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 400530735 is about 20013.2639766731. The cubic root of 400530735 is about 737.1320297831.

Adding to 400530735 its reverse (537035004), we get a palindrome (937565739).

It can be divided in two parts, 400 and 530735, that added together give a palindrome (531135).

The spelling of 400530735 in words is "four hundred million, five hundred thirty thousand, seven hundred thirty-five".