44019690 has 128 divisors (see below), whose sum is σ = 128507904. Its totient is φ = 9504000.

The previous prime is 44019673. The next prime is 44019707. The reversal of 44019690 is 9691044.

It is an interprime number because it is at equal distance from previous prime (44019673) and next prime (44019707).

It is a super-2 number, since 2×44019690² = 3875466215392200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 132825 + ... + 133155.

It is an arithmetic number, because the mean of its divisors is an integer number (1003968).

Almost surely, 2^44019690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44019690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64253952).

44019690 is an abundant number, since it is smaller than the sum of its proper divisors (84488214).

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

44019690 is a wasteful number, since it uses less digits than its factorization.

44019690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 44019690 is about 6634.7336042979. The cubic root of 44019690 is about 353.0874867086.

The spelling of 44019690 in words is "forty-four million, nineteen thousand, six hundred ninety".