40690364 has 72 divisors (see below), whose sum is σ = 87588480. Its totient is φ = 16410240.

The previous prime is 40690361. The next prime is 40690369. The reversal of 40690364 is 46309604.

It is a self number, because there is not a number n which added to its sum of digits gives 40690364.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40690361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 182357 + ... + 182579.

Almost surely, 2^40690364 is an apocalyptic number.

40690364 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40690364 is an abundant number, since it is smaller than the sum of its proper divisors (46898116).

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

40690364 is a wasteful number, since it uses less digits than its factorization.

40690364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 40690364 is about 6378.8999051561. The cubic root of 40690364 is about 343.9514872096.

Adding to 40690364 its reverse (46309604), we get a palindrome (86999968).

The spelling of 40690364 in words is "forty million, six hundred ninety thousand, three hundred sixty-four".