720450040 has 32 divisors (see below), whose sum is σ = 1637732880. Its totient is φ = 285207552.

The previous prime is 720450019. The next prime is 720450061. The reversal of 720450040 is 40054027.

It is an interprime number because it is at equal distance from previous prime (720450019) and next prime (720450061).

It is a junction number, because it is equal to n+sod(n) for n = 720449993 and 720450020.

It is a congruent number.

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, 88962 + ... + 96721.

Almost surely, 2^720450040 is an apocalyptic number.

It is an amenable number.

720450040 is an abundant number, since it is smaller than the sum of its proper divisors (917282840).

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

720450040 is a wasteful number, since it uses less digits than its factorization.

720450040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185791 (or 185787 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 720450040 is about 26841.2004202495. The cubic root of 720450040 is about 896.4676522125.

The spelling of 720450040 in words is "seven hundred twenty million, four hundred fifty thousand, forty".