45281672 has 8 divisors (see below), whose sum is σ = 84903150. Its totient is φ = 22640832.

The previous prime is 45281629. The next prime is 45281683. The reversal of 45281672 is 27618254.

It can be written as a sum of positive squares in only one way, i.e., 35832196 + 9449476 = 5986^2 + 3074^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830097 + ... + 2830112.

Almost surely, 2^45281672 is an apocalyptic number.

It is an amenable number.

45281672 is a deficient number, since it is larger than the sum of its proper divisors (39621478).

45281672 is a wasteful number, since it uses less digits than its factorization.

45281672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5660215 (or 5660211 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 45281672 is about 6729.1657729618. The cubic root of 45281672 is about 356.4299186814.

The spelling of 45281672 in words is "forty-five million, two hundred eighty-one thousand, six hundred seventy-two".