44161572 has 96 divisors (see below), whose sum is σ = 130369792. Its totient is φ = 11321856.

The previous prime is 44161531. The next prime is 44161573. The reversal of 44161572 is 27516144.

It is a super-2 number, since 2×44161572² = 3900488883022368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44161573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39858 + ... + 40950.

Almost surely, 2^44161572 is an apocalyptic number.

44161572 is a gapful number since it is divisible by the number (42) 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 44161572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65184896).

44161572 is an abundant number, since it is smaller than the sum of its proper divisors (86208220).

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

44161572 is a wasteful number, since it uses less digits than its factorization.

44161572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157 (or 1155 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 44161572 is about 6645.4173683825. The cubic root of 44161572 is about 353.4664310088.

The spelling of 44161572 in words is "forty-four million, one hundred sixty-one thousand, five hundred seventy-two".