720425490 has 64 divisors (see below), whose sum is σ = 1854005760. Its totient is φ = 178513920.

The previous prime is 720425479. The next prime is 720425501. The reversal of 720425490 is 94524027.

It is an interprime number because it is at equal distance from previous prime (720425479) and next prime (720425501).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31350 + ... + 49230.

It is an arithmetic number, because the mean of its divisors is an integer number (28968840).

Almost surely, 2^720425490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720425490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (927002880).

720425490 is an abundant number, since it is smaller than the sum of its proper divisors (1133580270).

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

720425490 is a wasteful number, since it uses less digits than its factorization.

720425490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17987.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 720425490 is about 26840.7430970158. The cubic root of 720425490 is about 896.4574694427.

The spelling of 720425490 in words is "seven hundred twenty million, four hundred twenty-five thousand, four hundred ninety".