730351020 has 48 divisors (see below), whose sum is σ = 2337124608. Its totient is φ = 166937280.

The previous prime is 730351019. The next prime is 730351031. The reversal of 730351020 is 20153037.

It is a happy number.

It is a super-2 number, since 2×730351020² = 1066825224830080800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 15 ways as a sum of consecutive naturals, for example, 869046 + ... + 869885.

It is an arithmetic number, because the mean of its divisors is an integer number (48690096).

Almost surely, 2^730351020 is an apocalyptic number.

730351020 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

730351020 is an abundant number, since it is smaller than the sum of its proper divisors (1606773588).

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

730351020 is a wasteful number, since it uses less digits than its factorization.

730351020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738950 (or 1738948 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 730351020 is about 27025.0073080471. The cubic root of 730351020 is about 900.5556322079. Note that the first 3 decimals are identical.

The spelling of 730351020 in words is "seven hundred thirty million, three hundred fifty-one thousand, twenty".