1232891040 has 48 divisors (see below), whose sum is σ = 3883608288. Its totient is φ = 328770816.

The previous prime is 1232891029. The next prime is 1232891041. The reversal of 1232891040 is 401982321.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1232890989 and 1232891007.

It is not an unprimeable number, because it can be changed into a prime (1232891041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1283782 + ... + 1284741.

It is an arithmetic number, because the mean of its divisors is an integer number (80908506).

Almost surely, 2^1232891040 is an apocalyptic number.

1232891040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232891040 is an abundant number, since it is smaller than the sum of its proper divisors (2650717248).

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

1232891040 is a wasteful number, since it uses less digits than its factorization.

1232891040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568541 (or 2568533 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1232891040 is about 35112.5481843742. The cubic root of 1232891040 is about 1072.2800653118.

The spelling of 1232891040 in words is "one billion, two hundred thirty-two million, eight hundred ninety-one thousand, forty".