1927872240 has 160 divisors (see below), whose sum is σ = 7189777920. Its totient is φ = 417457152.

The previous prime is 1927872239. The next prime is 1927872251. The reversal of 1927872240 is 422787291.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1927872192 and 1927872201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1722 + ... + 62118.

It is an arithmetic number, because the mean of its divisors is an integer number (44936112).

Almost surely, 2^1927872240 is an apocalyptic number.

1927872240 is a gapful number since it is divisible by the number (10) 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 1927872240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3594888960).

1927872240 is an abundant number, since it is smaller than the sum of its proper divisors (5261905680).

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

1927872240 is a wasteful number, since it uses less digits than its factorization.

1927872240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60439 (or 60433 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 1927872240 is about 43907.5419489636. The cubic root of 1927872240 is about 1244.5893582897.

The spelling of 1927872240 in words is "one billion, nine hundred twenty-seven million, eight hundred seventy-two thousand, two hundred forty".