45771648 has 128 divisors (see below), whose sum is σ = 134174880. Its totient is φ = 13737984.

The previous prime is 45771643. The next prime is 45771659. The reversal of 45771648 is 84617754.

It is a tau number, because it is divible by the number of its divisors (128).

Its product of digits (188160) is a multiple of the sum of its prime factors (256).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45771643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264490 + ... + 264662.

Almost surely, 2^45771648 is an apocalyptic number.

45771648 is a gapful number since it is divisible by the number (48) 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 45771648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67087440).

45771648 is an abundant number, since it is smaller than the sum of its proper divisors (88403232).

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

45771648 is a wasteful number, since it uses less digits than its factorization.

45771648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 244 counting only the distinct ones).

The product of its digits is 188160, while the sum is 42.

The square root of 45771648 is about 6765.4747061829. The cubic root of 45771648 is about 357.7109075487.

The spelling of 45771648 in words is "forty-five million, seven hundred seventy-one thousand, six hundred forty-eight".