772420 has 24 divisors (see below), whose sum is σ = 1770048. Its totient is φ = 280800.

The previous prime is 772403. The next prime is 772439. The reversal of 772420 is 24277.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 772391 and 772400.

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, 1536 + ... + 1975.

It is an arithmetic number, because the mean of its divisors is an integer number (73752).

2⁷⁷²⁴²⁰ is an apocalyptic number.

It is an amenable number.

772420 is an abundant number, since it is smaller than the sum of its proper divisors (997628).

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

772420 is a wasteful number, since it uses less digits than its factorization.

772420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3531 (or 3529 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 772420 is about 878.8742799741. The cubic root of 772420 is about 91.7524852878.

Adding to 772420 its reverse (24277), we get a palindrome (796697).

It can be divided in two parts, 7724 and 20, that added together give a square (7744 = 88²).

The spelling of 772420 in words is "seven hundred seventy-two thousand, four hundred twenty", and thus it is an iban number.