901571920 has 80 divisors (see below), whose sum is σ = 2142987840. Its totient is φ = 352640000.

The previous prime is 901571911. The next prime is 901571939. The reversal of 901571920 is 29175109.

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

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, 1184340 + ... + 1185100.

It is an arithmetic number, because the mean of its divisors is an integer number (26787348).

Almost surely, 2^901571920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 901571920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1071493920).

901571920 is an abundant number, since it is smaller than the sum of its proper divisors (1241415920).

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

901571920 is a wasteful number, since it uses less digits than its factorization.

901571920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 901571920 is about 30026.1872371435. The cubic root of 901571920 is about 966.0511584398.

The spelling of 901571920 in words is "nine hundred one million, five hundred seventy-one thousand, nine hundred twenty".