40696290 has 64 divisors (see below), whose sum is σ = 114249600. Its totient is φ = 10279872.

The previous prime is 40696289. The next prime is 40696291. The reversal of 40696290 is 9269604.

It is an interprime number because it is at equal distance from previous prime (40696289) and next prime (40696291).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40696291) 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, 1164 + ... + 9096.

It is an arithmetic number, because the mean of its divisors is an integer number (1785150).

Almost surely, 2^40696290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40696290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57124800).

40696290 is an abundant number, since it is smaller than the sum of its proper divisors (73553310).

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

40696290 is a wasteful number, since it uses less digits than its factorization.

40696290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7968 (or 7962 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 40696290 is about 6379.3643884011. The cubic root of 40696290 is about 343.9681836898.

The spelling of 40696290 in words is "forty million, six hundred ninety-six thousand, two hundred ninety".