45641808 has 30 divisors (see below), whose sum is σ = 127734074. Its totient is φ = 15213888.

The previous prime is 45641803. The next prime is 45641837. The reversal of 45641808 is 80814654.

45641808 is a `hidden beast` number, since 4 + 5 + 641 + 8 + 0 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 30338064 + 15303744 = 5508^2 + 3912^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45641803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158335 + ... + 158622.

Almost surely, 2^45641808 is an apocalyptic number.

45641808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

45641808 is an abundant number, since it is smaller than the sum of its proper divisors (82092266).

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

45641808 is a wasteful number, since it uses less digits than its factorization.

45641808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316971 (or 316962 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 45641808 is about 6755.8721124663. The cubic root of 45641808 is about 357.3723488376.

The spelling of 45641808 in words is "forty-five million, six hundred forty-one thousand, eight hundred eight".