1070728921440 has 384 divisors, whose sum is σ = 4019237107200. Its totient is φ = 265395087360.

The previous prime is 1070728921351. The next prime is 1070728921469. The reversal of 1070728921440 is 441298270701.

1070728921440 is a `hidden beast` number, since 107 + 0 + 7 + 2 + 89 + 21 + 440 = 666.

It is a super-2 number, since 2×1070728921440² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent 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, 4227175 + ... + 4473305.

It is an arithmetic number, because the mean of its divisors is an integer number (10466763300).

Almost surely, 2^{1070728921440} is an apocalyptic number.

1070728921440 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 1070728921440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2009618553600).

1070728921440 is an abundant number, since it is smaller than the sum of its proper divisors (2948508185760).

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

1070728921440 is a wasteful number, since it uses less digits than its factorization.

1070728921440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246227 (or 246213 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The spelling of 1070728921440 in words is "one trillion, seventy billion, seven hundred twenty-eight million, nine hundred twenty-one thousand, four hundred forty".