734890 has 16 divisors (see below), whose sum is σ = 1424808. Its totient is φ = 271296.

The previous prime is 734887. The next prime is 734897. The reversal of 734890 is 98437.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 561001 + 173889 = 749^2 + 417^2 .

It is not an unprimeable number, because it can be changed into a prime (734897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2697 + ... + 2956.

2⁷³⁴⁸⁹⁰ is an apocalyptic number.

734890 is a deficient number, since it is larger than the sum of its proper divisors (689918).

734890 is a wasteful number, since it uses less digits than its factorization.

734890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5673.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 734890 is about 857.2572542709. The cubic root of 734890 is about 90.2417369527.

The spelling of 734890 in words is "seven hundred thirty-four thousand, eight hundred ninety".