84328390 has 32 divisors (see below), whose sum is σ = 157308480. Its totient is φ = 32524800.

The previous prime is 84328369. The next prime is 84328393. The reversal of 84328390 is 9382348.

It is a super-2 number, since 2×84328390² = 14222554719984200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84328393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35335 + ... + 37645.

It is an arithmetic number, because the mean of its divisors is an integer number (4915890).

Almost surely, 2^84328390 is an apocalyptic number.

84328390 is a deficient number, since it is larger than the sum of its proper divisors (72980090).

84328390 is a wasteful number, since it uses less digits than its factorization.

84328390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 84328390 is about 9183.0490579110. The cubic root of 84328390 is about 438.5218823198.

The spelling of 84328390 in words is "eighty-four million, three hundred twenty-eight thousand, three hundred ninety".