730695840 has 288 divisors, whose sum is σ = 2738582784. Its totient is φ = 163215360.

The previous prime is 730695827. The next prime is 730695841. The reversal of 730695840 is 48596037.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 730695792 and 730695801.

It is not an unprimeable number, because it can be changed into a prime (730695841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1105110 + ... + 1105770.

It is an arithmetic number, because the mean of its divisors is an integer number (9508968).

Almost surely, 2^730695840 is an apocalyptic number.

730695840 is a gapful number since it is divisible by the number (70) 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 730695840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1369291392).

730695840 is an abundant number, since it is smaller than the sum of its proper divisors (2007886944).

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

730695840 is a wasteful number, since it uses less digits than its factorization.

730695840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 730695840 is about 27031.3862019690. The cubic root of 730695840 is about 900.6973360952.

The spelling of 730695840 in words is "seven hundred thirty million, six hundred ninety-five thousand, eight hundred forty".