340420432 has 30 divisors (see below), whose sum is σ = 724980074. Its totient is φ = 154735680.

The previous prime is 340420429. The next prime is 340420439. The reversal of 340420432 is 234024043.

It can be written as a sum of positive squares in only one way, i.e., 173080336 + 167340096 = 13156^2 + 12936^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340420439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85983 + ... + 89854.

Almost surely, 2^340420432 is an apocalyptic number.

It is an amenable number.

340420432 is an abundant number, since it is smaller than the sum of its proper divisors (384559642).

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

340420432 is a wasteful number, since it uses less digits than its factorization.

340420432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175867 (or 175850 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 340420432 is about 18450.4859556598. The cubic root of 340420432 is about 698.2407742904.

Adding to 340420432 its reverse (234024043), we get a palindrome (574444475).

The spelling of 340420432 in words is "three hundred forty million, four hundred twenty thousand, four hundred thirty-two".