44778240 has 324 divisors, whose sum is σ = 175056336. Its totient is φ = 10543104.

The previous prime is 44778203. The next prime is 44778259. The reversal of 44778240 is 4287744.

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 = 44778195 and 44778204.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1946869 + ... + 1946891.

Almost surely, 2^44778240 is an apocalyptic number.

44778240 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 44778240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87528168).

44778240 is an abundant number, since it is smaller than the sum of its proper divisors (130278096).

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

44778240 is a wasteful number, since it uses less digits than its factorization.

44778240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 44778240 is about 6691.6545039325. The cubic root of 44778240 is about 355.1040890302.

It can be divided in two parts, 447 and 78240, that added together give a palindrome (78687).

The spelling of 44778240 in words is "forty-four million, seven hundred seventy-eight thousand, two hundred forty".