45670240 has 144 divisors (see below), whose sum is σ = 135940896. Its totient is φ = 14192640.

The previous prime is 45670217. The next prime is 45670267. The reversal of 45670240 is 4207654.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 45670199 and 45670208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135352 + ... + 135688.

It is an arithmetic number, because the mean of its divisors is an integer number (944034).

Almost surely, 2^45670240 is an apocalyptic number.

45670240 is a gapful number since it is divisible by the number (40) 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 45670240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67970448).

45670240 is an abundant number, since it is smaller than the sum of its proper divisors (90270656).

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

45670240 is a wasteful number, since it uses less digits than its factorization.

45670240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 45670240 is about 6757.9760283683. The cubic root of 45670240 is about 357.4465403296.

Adding to 45670240 its reverse (4207654), we get a palindrome (49877894).

The spelling of 45670240 in words is "forty-five million, six hundred seventy thousand, two hundred forty".