901649040 has 80 divisors (see below), whose sum is σ = 2863316736. Its totient is φ = 234572800.

The previous prime is 901649039. The next prime is 901649051. The reversal of 901649040 is 40946109.

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

It is a junction number, because it is equal to n+sod(n) for n = 901648992 and 901649010.

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, 35976 + ... + 55655.

Almost surely, 2^901649040 is an apocalyptic number.

It is an amenable number.

901649040 is an abundant number, since it is smaller than the sum of its proper divisors (1961667696).

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

901649040 is a wasteful number, since it uses less digits than its factorization.

901649040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91688 (or 91682 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 901649040 is about 30027.4714220162. The cubic root of 901649040 is about 966.0787028281.

The spelling of 901649040 in words is "nine hundred one million, six hundred forty-nine thousand, forty".