1392606720 has 120 divisors (see below), whose sum is σ = 4823068536. Its totient is φ = 371355648.

The previous prime is 1392606713. The next prime is 1392606739. The reversal of 1392606720 is 276062931.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 7182 + ... + 53261.

Almost surely, 2^1392606720 is an apocalyptic number.

1392606720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1392606720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2411534268).

1392606720 is an abundant number, since it is smaller than the sum of its proper divisors (3430461816).

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

1392606720 is an equidigital number, since it uses as much as digits as its factorization.

1392606720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60472 (or 60453 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 1392606720 is about 37317.6462280246. The cubic root of 1392606720 is about 1116.7162319525.

The spelling of 1392606720 in words is "one billion, three hundred ninety-two million, six hundred six thousand, seven hundred twenty".