40170780 has 72 divisors (see below), whose sum is σ = 131232192. Its totient is φ = 9887616.

The previous prime is 40170763. The next prime is 40170791. The reversal of 40170780 is 8707104.

40170780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40170780² = 3227383131616800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6244 + ... + 10923.

Almost surely, 2^40170780 is an apocalyptic number.

It is an amenable number.

40170780 is an abundant number, since it is smaller than the sum of its proper divisors (91061412).

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

40170780 is a wasteful number, since it uses less digits than its factorization.

40170780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17195 (or 17190 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 40170780 is about 6338.0422844913. The cubic root of 40170780 is about 342.4812144491.

Adding to 40170780 its reverse (8707104), we get a palindrome (48877884).

It can be divided in two parts, 40 and 170780, that added together give a triangular number (170820 = T₅₈₄).

The spelling of 40170780 in words is "forty million, one hundred seventy thousand, seven hundred eighty".