1071925440 has 224 divisors, whose sum is σ = 3550310400. Its totient is φ = 273715200.

The previous prime is 1071925397. The next prime is 1071925441. The reversal of 1071925440 is 445291701.

It is a happy number.

It is a super-2 number, since 2×1071925440² = 2298048297838387200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1071925441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5386461 + ... + 5386659.

It is an arithmetic number, because the mean of its divisors is an integer number (15849600).

Almost surely, 2^1071925440 is an apocalyptic number.

1071925440 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 1071925440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1775155200).

1071925440 is an abundant number, since it is smaller than the sum of its proper divisors (2478384960).

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

1071925440 is a wasteful number, since it uses less digits than its factorization.

1071925440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1071925440 is about 32740.2724484693. The cubic root of 1071925440 is about 1023.4222611790.

The spelling of 1071925440 in words is "one billion, seventy-one million, nine hundred twenty-five thousand, four hundred forty".