40780115 has 4 divisors (see below), whose sum is σ = 48936144. Its totient is φ = 32624088.

The previous prime is 40780109. The next prime is 40780121. The reversal of 40780115 is 51108704.

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

It is an interprime number because it is at equal distance from previous prime (40780109) and next prime (40780121).

It is a cyclic number.

It is not a de Polignac number, because 40780115 - 2¹² = 40776019 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4078007 + ... + 4078016.

It is an arithmetic number, because the mean of its divisors is an integer number (12234036).

Almost surely, 2^40780115 is an apocalyptic number.

40780115 is a deficient number, since it is larger than the sum of its proper divisors (8156029).

40780115 is an equidigital number, since it uses as much as digits as its factorization.

40780115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8156028.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 40780115 is about 6385.9310206109. The cubic root of 40780115 is about 344.2041868495.

Adding to 40780115 its reverse (51108704), we get a palindrome (91888819).

The spelling of 40780115 in words is "forty million, seven hundred eighty thousand, one hundred fifteen".