40320802 has 4 divisors (see below), whose sum is σ = 60481206. Its totient is φ = 20160400.

The previous prime is 40320781. The next prime is 40320803. The reversal of 40320802 is 20802304.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 30151081 + 10169721 = 5491^2 + 3189^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40320802.

It is not an unprimeable number, because it can be changed into a prime (40320803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10080199 + ... + 10080202.

Almost surely, 2^40320802 is an apocalyptic number.

40320802 is a deficient number, since it is larger than the sum of its proper divisors (20160404).

40320802 is a wasteful number, since it uses less digits than its factorization.

40320802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20160403.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 40320802 is about 6349.8662978050. The cubic root of 40320802 is about 342.9070288358.

The spelling of 40320802 in words is "forty million, three hundred twenty thousand, eight hundred two".