40681204 has 72 divisors (see below), whose sum is σ = 85095360. Its totient is φ = 16879104.

The previous prime is 40681183. The next prime is 40681217. The reversal of 40681204 is 40218604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1099474 + ... + 1099510.

It is an arithmetic number, because the mean of its divisors is an integer number (1181880).

Almost surely, 2^40681204 is an apocalyptic number.

It is an amenable number.

40681204 is an abundant number, since it is smaller than the sum of its proper divisors (44414156).

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

40681204 is a wasteful number, since it uses less digits than its factorization.

40681204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 40681204 is about 6378.1818726029. The cubic root of 40681204 is about 343.9256757581.

Adding to 40681204 its reverse (40218604), we get a palindrome (80899808).

The spelling of 40681204 in words is "forty million, six hundred eighty-one thousand, two hundred four".