1401953280 has 704 divisors, whose sum is σ = 5942522880. Its totient is φ = 273678336.

The previous prime is 1401953257. The next prime is 1401953281. The reversal of 1401953280 is 823591041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401953281) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23761891 + ... + 23761949.

Almost surely, 2^1401953280 is an apocalyptic number.

1401953280 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 1401953280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2971261440).

1401953280 is an abundant number, since it is smaller than the sum of its proper divisors (4540569600).

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

1401953280 is a wasteful number, since it uses less digits than its factorization.

1401953280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1401953280 is about 37442.6665717067. Note that the first 3 decimals coincide. The cubic root of 1401953280 is about 1119.2089652482.

The spelling of 1401953280 in words is "one billion, four hundred one million, nine hundred fifty-three thousand, two hundred eighty".