44778402 has 48 divisors (see below), whose sum is σ = 102697920. Its totient is φ = 14061600.

The previous prime is 44778389. The next prime is 44778427. The reversal of 44778402 is 20487744.

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, 106152 + ... + 106572.

It is an arithmetic number, because the mean of its divisors is an integer number (2139540).

Almost surely, 2^44778402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44778402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51348960).

44778402 is an abundant number, since it is smaller than the sum of its proper divisors (57919518).

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

44778402 is a wasteful number, since it uses less digits than its factorization.

44778402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 756 counting only the distinct ones).

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

The square root of 44778402 is about 6691.6666085513. Note that the first 4 decimals coincide. The cubic root of 44778402 is about 355.1045172650.

The spelling of 44778402 in words is "forty-four million, seven hundred seventy-eight thousand, four hundred two".