1402897440 has 192 divisors, whose sum is σ = 5154105600. Its totient is φ = 320624640.

The previous prime is 1402897423. The next prime is 1402897453. The reversal of 1402897440 is 447982041.

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, 160380 + ... + 168900.

It is an arithmetic number, because the mean of its divisors is an integer number (26844300).

Almost surely, 2^1402897440 is an apocalyptic number.

1402897440 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 1402897440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2577052800).

1402897440 is an abundant number, since it is smaller than the sum of its proper divisors (3751208160).

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

1402897440 is an equidigital number, since it uses as much as digits as its factorization.

1402897440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8560 (or 8538 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 1402897440 is about 37455.2725260410. The cubic root of 1402897440 is about 1119.4601565022.

The spelling of 1402897440 in words is "one billion, four hundred two million, eight hundred ninety-seven thousand, four hundred forty".