6429240 has 64 divisors (see below), whose sum is σ = 21434400. Its totient is φ = 1714176.

The previous prime is 6429223. The next prime is 6429323. The reversal of 6429240 is 429246.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam 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, 1897 + ... + 4056.

Almost surely, 2^6429240 is an apocalyptic number.

6429240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6429240 is an abundant number, since it is smaller than the sum of its proper divisors (15005160).

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

6429240 is a wasteful number, since it uses less digits than its factorization.

6429240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5973 (or 5963 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 6429240 is about 2535.5946048215. The cubic root of 6429240 is about 185.9458739491.

The spelling of 6429240 in words is "six million, four hundred twenty-nine thousand, two hundred forty".