772040 has 16 divisors (see below), whose sum is σ = 1737180. Its totient is φ = 308800.

The previous prime is 772019. The next prime is 772061. The reversal of 772040 is 40277.

It is an interprime number because it is at equal distance from previous prime (772019) and next prime (772061).

It can be written as a sum of positive squares in 2 ways, for example, as 770884 + 1156 = 878^2 + 34^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9611 + ... + 9690.

2⁷⁷²⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

772040 is an abundant number, since it is smaller than the sum of its proper divisors (965140).

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

772040 is a wasteful number, since it uses less digits than its factorization.

772040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19312 (or 19308 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 772040 is about 878.6580677374. The cubic root of 772040 is about 91.7374366254.

It can be divided in two parts, 77 and 2040, that multiplied together give a triangular number (157080 = T₅₆₀).

The spelling of 772040 in words is "seven hundred seventy-two thousand, forty", and thus it is an iban number.