40430070 has 64 divisors (see below), whose sum is σ = 108699840. Its totient is φ = 10692864.

The previous prime is 40430051. The next prime is 40430077. The reversal of 40430070 is 7003404.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40430077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36444 + ... + 37536.

It is an arithmetic number, because the mean of its divisors is an integer number (1698435).

Almost surely, 2^40430070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40430070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54349920).

40430070 is an abundant number, since it is smaller than the sum of its proper divisors (68269770).

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

40430070 is a wasteful number, since it uses less digits than its factorization.

40430070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246 (or 1240 counting only the distinct ones).

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

The square root of 40430070 is about 6358.4644372679. The cubic root of 40430070 is about 343.2165049033.

Adding to 40430070 its reverse (7003404), we get a palindrome (47433474).

The spelling of 40430070 in words is "forty million, four hundred thirty thousand, seventy".