40470030 has 80 divisors (see below), whose sum is σ = 115259760. Its totient is φ = 10153728.

The previous prime is 40470029. The next prime is 40470037. The reversal of 40470030 is 3007404.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40469985 and 40470012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40470037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12301 + ... + 15239.

It is an arithmetic number, because the mean of its divisors is an integer number (1440747).

Almost surely, 2^40470030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40470030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57629880).

40470030 is an abundant number, since it is smaller than the sum of its proper divisors (74789730).

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

40470030 is a wasteful number, since it uses less digits than its factorization.

40470030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975 (or 2966 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 40470030 is about 6361.6059293232. The cubic root of 40470030 is about 343.3295430086.

Adding to 40470030 its reverse (3007404), we get a palindrome (43477434).

The spelling of 40470030 in words is "forty million, four hundred seventy thousand, thirty".