906432720 has 80 divisors (see below), whose sum is σ = 2813069952. Its totient is φ = 241446400.

The previous prime is 906432719. The next prime is 906432727. The reversal of 906432720 is 27234609.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906432727) 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 15 ways as a sum of consecutive naturals, for example, 310789 + ... + 313691.

Almost surely, 2^906432720 is an apocalyptic number.

It is an amenable number.

906432720 is an abundant number, since it is smaller than the sum of its proper divisors (1906637232).

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

906432720 is a wasteful number, since it uses less digits than its factorization.

906432720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220 (or 4214 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 906432720 is about 30107.0211080406. The cubic root of 906432720 is about 967.7841936328.

The spelling of 906432720 in words is "nine hundred six million, four hundred thirty-two thousand, seven hundred twenty".