1154272640 has 32 divisors (see below), whose sum is σ = 2759434560. Its totient is φ = 461708800.

The previous prime is 1154272523. The next prime is 1154272643. The reversal of 1154272640 is 462724511.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 1154272597 and 1154272606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154272643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901136 + ... + 902415.

It is an arithmetic number, because the mean of its divisors is an integer number (86232330).

Almost surely, 2^1154272640 is an apocalyptic number.

1154272640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1154272640 is an abundant number, since it is smaller than the sum of its proper divisors (1605161920).

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

1154272640 is an equidigital number, since it uses as much as digits as its factorization.

1154272640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803570 (or 1803558 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 1154272640 is about 33974.5881505575. The cubic root of 1154272640 is about 1048.9854569181.

The spelling of 1154272640 in words is "one billion, one hundred fifty-four million, two hundred seventy-two thousand, six hundred forty".