40304061 has 40 divisors (see below), whose sum is σ = 71058944. Its totient is φ = 22278240.

The previous prime is 40304057. The next prime is 40304081. The reversal of 40304061 is 16040304.

It is not a de Polignac number, because 40304061 - 2² = 40304057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40304041) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16431 + ... + 18723.

Almost surely, 2^40304061 is an apocalyptic number.

It is an amenable number.

40304061 is a deficient number, since it is larger than the sum of its proper divisors (30754883).

40304061 is a wasteful number, since it uses less digits than its factorization.

40304061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343 (or 2334 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40304061 is about 6348.5479442153. The cubic root of 40304061 is about 342.8595644918.

Adding to 40304061 its reverse (16040304), we get a palindrome (56344365).

The spelling of 40304061 in words is "forty million, three hundred four thousand, sixty-one".