1401575940 has 96 divisors (see below), whose sum is σ = 4381480320. Its totient is φ = 371952000.

The previous prime is 1401575933. The next prime is 1401575941. The reversal of 1401575940 is 495751041.

1401575940 is a `hidden beast` number, since 1 + 40 + 1 + 575 + 9 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1401575895 and 1401575904.

It is not an unprimeable number, because it can be changed into a prime (1401575941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107790 + ... + 120090.

It is an arithmetic number, because the mean of its divisors is an integer number (45640420).

Almost surely, 2^1401575940 is an apocalyptic number.

1401575940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401575940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2190740160).

1401575940 is an abundant number, since it is smaller than the sum of its proper divisors (2979904380).

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

1401575940 is a wasteful number, since it uses less digits than its factorization.

1401575940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12530 (or 12522 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 1401575940 is about 37437.6273286649. The cubic root of 1401575940 is about 1119.1085434029.

The spelling of 1401575940 in words is "one billion, four hundred one million, five hundred seventy-five thousand, nine hundred forty".