730402 has 4 divisors (see below), whose sum is σ = 1095606. Its totient is φ = 365200.

The previous prime is 730399. The next prime is 730421. The reversal of 730402 is 204037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204037 = 211 ⋅967.

It can be written as a sum of positive squares in only one way, i.e., 461041 + 269361 = 679^2 + 519^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182599 + ... + 182602.

2⁷³⁰⁴⁰² is an apocalyptic number.

730402 is a deficient number, since it is larger than the sum of its proper divisors (365204).

730402 is a wasteful number, since it uses less digits than its factorization.

730402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365203.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 730402 is about 854.6355948590. The cubic root of 730402 is about 90.0576585264.

Adding to 730402 its reverse (204037), we get a palindrome (934439).

The spelling of 730402 in words is "seven hundred thirty thousand, four hundred two".