1254604644 has 72 divisors (see below), whose sum is σ = 3314630592. Its totient is φ = 399368640.

The previous prime is 1254604597. The next prime is 1254604649. The reversal of 1254604644 is 4464064521.

1254604644 is a `hidden beast` number, since 1 + 2 + 5 + 4 + 6 + 0 + 4 + 644 = 666.

It is a super-3 number, since 3×1254604644³ (a number of 28 digits) contains 333 as substring.

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 = 1254604599 and 1254604608.

It is not an unprimeable number, because it can be changed into a prime (1254604649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 977227 + ... + 978509.

It is an arithmetic number, because the mean of its divisors is an integer number (46036536).

Almost surely, 2^1254604644 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 1254604644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1657315296).

1254604644 is an abundant number, since it is smaller than the sum of its proper divisors (2060025948).

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

1254604644 is a wasteful number, since it uses less digits than its factorization.

1254604644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497 (or 2492 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 1254604644 is about 35420.3986990548. The cubic root of 1254604644 is about 1078.5384447922.

The spelling of 1254604644 in words is "one billion, two hundred fifty-four million, six hundred four thousand, six hundred forty-four".