7720460 has 48 divisors (see below), whose sum is σ = 18627840. Its totient is φ = 2658240.

The previous prime is 7720451. The next prime is 7720481. The reversal of 7720460 is 640277.

7720460 = T₄₇₇ + T₄₇₈ + ... + T₅₃₆.

It is a super-2 number, since 2×7720460² = 119211005223200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3257 + ... + 5103.

It is an arithmetic number, because the mean of its divisors is an integer number (388080).

Almost surely, 2^7720460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7720460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9313920).

7720460 is an abundant number, since it is smaller than the sum of its proper divisors (10907380).

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

7720460 is a wasteful number, since it uses less digits than its factorization.

7720460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886 (or 1884 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 7720460 is about 2778.5715754682. The cubic root of 7720460 is about 197.6428278392.

The spelling of 7720460 in words is "seven million, seven hundred twenty thousand, four hundred sixty".