7145780 has 24 divisors (see below), whose sum is σ = 15889608. Its totient is φ = 2690048.

The previous prime is 7145759. The next prime is 7145813. The reversal of 7145780 is 875417.

It can be written as a sum of positive squares in 4 ways, for example, as 59536 + 7086244 = 244^2 + 2662^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10169 + ... + 10848.

It is an arithmetic number, because the mean of its divisors is an integer number (662067).

Almost surely, 2^7145780 is an apocalyptic number.

It is an amenable number.

7145780 is an abundant number, since it is smaller than the sum of its proper divisors (8743828).

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

7145780 is a wasteful number, since it uses less digits than its factorization.

7145780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21043 (or 21041 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 7145780 is about 2673.1591796973. The cubic root of 7145780 is about 192.6119436597.

The spelling of 7145780 in words is "seven million, one hundred forty-five thousand, seven hundred eighty".