40190304 has 96 divisors (see below), whose sum is σ = 131556096. Its totient is φ = 10437120.

The previous prime is 40190303. The next prime is 40190309. The reversal of 40190304 is 40309104.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×40190304² = 3230521071224832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40190303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4674 + ... + 10110.

It is an arithmetic number, because the mean of its divisors is an integer number (1370376).

Almost surely, 2^40190304 is an apocalyptic number.

40190304 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40190304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65778048).

40190304 is an abundant number, since it is smaller than the sum of its proper divisors (91365792).

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

40190304 is a wasteful number, since it uses less digits than its factorization.

40190304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5468 (or 5460 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 40190304 is about 6339.5823206265. The cubic root of 40190304 is about 342.5366902637.

Adding to 40190304 its reverse (40309104), we get a palindrome (80499408).

The spelling of 40190304 in words is "forty million, one hundred ninety thousand, three hundred four".