344428590 has 32 divisors (see below), whose sum is σ = 901777536. Its totient is φ = 83497760.

The previous prime is 344428571. The next prime is 344428627. The reversal of 344428590 is 95824443.

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, 521532 + ... + 522191.

It is an arithmetic number, because the mean of its divisors is an integer number (28180548).

Almost surely, 2^344428590 is an apocalyptic number.

344428590 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

344428590 is an abundant number, since it is smaller than the sum of its proper divisors (557348946).

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

344428590 is a wasteful number, since it uses less digits than its factorization.

344428590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043744.

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 344428590 is about 18558.7874065091. The cubic root of 344428590 is about 700.9704838261.

The spelling of 344428590 in words is "three hundred forty-four million, four hundred twenty-eight thousand, five hundred ninety".