730772280 has 240 divisors, whose sum is σ = 2857840920. Its totient is φ = 166997376.

The previous prime is 730772279. The next prime is 730772291. The reversal of 730772280 is 82277037.

730772280 is a `hidden beast` number, since 7 + 307 + 72 + 280 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 156459 + ... + 161061.

Almost surely, 2^730772280 is an apocalyptic number.

730772280 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 730772280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1428920460).

730772280 is an abundant number, since it is smaller than the sum of its proper divisors (2127068640).

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

730772280 is a wasteful number, since it uses less digits than its factorization.

730772280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640 (or 4620 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 730772280 is about 27032.8000769436. The cubic root of 730772280 is about 900.7287431002.

It can be divided in two parts, 73077 and 2280, that added together give a palindrome (75357).

The spelling of 730772280 in words is "seven hundred thirty million, seven hundred seventy-two thousand, two hundred eighty".