40290070 has 32 divisors (see below), whose sum is σ = 77798880. Its totient is φ = 14976000.

The previous prime is 40290053. The next prime is 40290071. The reversal of 40290070 is 7009204.

40290070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40290071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8070 + ... + 12070.

It is an arithmetic number, because the mean of its divisors is an integer number (2431215).

Almost surely, 2^40290070 is an apocalyptic number.

40290070 is a deficient number, since it is larger than the sum of its proper divisors (37508810).

40290070 is a wasteful number, since it uses less digits than its factorization.

40290070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 40290070 is about 6347.4459430546. The cubic root of 40290070 is about 342.8198869075.

Adding to 40290070 its reverse (7009204), we get a palindrome (47299274).

The spelling of 40290070 in words is "forty million, two hundred ninety thousand, seventy".