729442980 has 72 divisors (see below), whose sum is σ = 2528740032. Its totient is φ = 166729536.

The previous prime is 729442957. The next prime is 729442993. The reversal of 729442980 is 89244927.

It is a super-2 number, since 2×729442980² = 1064174122142560800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 288202 + ... + 290721.

Almost surely, 2^729442980 is an apocalyptic number.

729442980 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

729442980 is an abundant number, since it is smaller than the sum of its proper divisors (1799297052).

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

729442980 is a wasteful number, since it uses less digits than its factorization.

729442980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578945 (or 578940 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 729442980 is about 27008.2020875141. The cubic root of 729442980 is about 900.1822593844.

The spelling of 729442980 in words is "seven hundred twenty-nine million, four hundred forty-two thousand, nine hundred eighty".