1400881540 has 48 divisors (see below), whose sum is σ = 3057223680. Its totient is φ = 538554240.

The previous prime is 1400881529. The next prime is 1400881541. The reversal of 1400881540 is 451880041.

It is a super-2 number, since 2×1400881540² = 3924938178225543200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1400881541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123925 + ... + 134755.

It is an arithmetic number, because the mean of its divisors is an integer number (63692160).

Almost surely, 2^1400881540 is an apocalyptic number.

1400881540 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 1400881540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1528611840).

1400881540 is an abundant number, since it is smaller than the sum of its proper divisors (1656342140).

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

1400881540 is a wasteful number, since it uses less digits than its factorization.

1400881540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11092 (or 11090 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 1400881540 is about 37428.3520876888. The cubic root of 1400881540 is about 1118.9236949707.

The spelling of 1400881540 in words is "one billion, four hundred million, eight hundred eighty-one thousand, five hundred forty".