1976052440 has 128 divisors (see below), whose sum is σ = 4800038400. Its totient is φ = 729907200.

The previous prime is 1976052439. The next prime is 1976052503. The reversal of 1976052440 is 442506791.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 1976052394 and 1976052403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7688792 + ... + 7689048.

It is an arithmetic number, because the mean of its divisors is an integer number (37500300).

Almost surely, 2^1976052440 is an apocalyptic number.

1976052440 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 1976052440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2400019200).

1976052440 is an abundant number, since it is smaller than the sum of its proper divisors (2823985960).

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

1976052440 is a wasteful number, since it uses less digits than its factorization.

1976052440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1976052440 is about 44452.8113846582. The cubic root of 1976052440 is about 1254.8721720781.

The spelling of 1976052440 in words is "one billion, nine hundred seventy-six million, fifty-two thousand, four hundred forty".