730307390 has 32 divisors (see below), whose sum is σ = 1332102240. Its totient is φ = 288249984.

The previous prime is 730307387. The next prime is 730307449. The reversal of 730307390 is 93703037.

It is a super-2 number, since 2×730307390² = 1066697767777224200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238952 + ... + 241988.

It is an arithmetic number, because the mean of its divisors is an integer number (41628195).

Almost surely, 2^730307390 is an apocalyptic number.

730307390 is a deficient number, since it is larger than the sum of its proper divisors (601794850).

730307390 is a wasteful number, since it uses less digits than its factorization.

730307390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3356.

The product of its (nonzero) digits is 11907, while the sum is 32.

The square root of 730307390 is about 27024.2000806684. The cubic root of 730307390 is about 900.5376992672.

The spelling of 730307390 in words is "seven hundred thirty million, three hundred seven thousand, three hundred ninety".