1426947840 has 180 divisors, whose sum is σ = 5106251304. Its totient is φ = 380491776.

The previous prime is 1426947839. The next prime is 1426947859. The reversal of 1426947840 is 487496241.

It is a tau number, because it is divible by the number of its divisors (180).

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 19 ways as a sum of consecutive naturals, for example, 96799 + ... + 110561.

Almost surely, 2^1426947840 is an apocalyptic number.

1426947840 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 1426947840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2553125652).

1426947840 is an abundant number, since it is smaller than the sum of its proper divisors (3679303464).

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

1426947840 is an equidigital number, since it uses as much as digits as its factorization.

1426947840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13796 (or 13773 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 1426947840 is about 37774.9631369774. The cubic root of 1426947840 is about 1125.8210539612.

The spelling of 1426947840 in words is "one billion, four hundred twenty-six million, nine hundred forty-seven thousand, eight hundred forty".