730851240 has 128 divisors (see below), whose sum is σ = 2567013120. Its totient is φ = 162969600.

The previous prime is 730851223. The next prime is 730851241. The reversal of 730851240 is 42158037.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 730851198 and 730851207.

It is not an unprimeable number, because it can be changed into a prime (730851241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23830 + ... + 45050.

It is an arithmetic number, because the mean of its divisors is an integer number (20054790).

Almost surely, 2^730851240 is an apocalyptic number.

730851240 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 730851240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1283506560).

730851240 is an abundant number, since it is smaller than the sum of its proper divisors (1836161880).

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

730851240 is a wasteful number, since it uses less digits than its factorization.

730851240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21283 (or 21279 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 730851240 is about 27034.2604855395. The cubic root of 730851240 is about 900.7611832014.

The spelling of 730851240 in words is "seven hundred thirty million, eight hundred fifty-one thousand, two hundred forty".