1429701780 has 96 divisors (see below), whose sum is σ = 4319288064. Its totient is φ = 351258624.

The previous prime is 1429701761. The next prime is 1429701787. The reversal of 1429701780 is 871079241.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1429701787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503244 + ... + 506076.

It is an arithmetic number, because the mean of its divisors is an integer number (44992584).

Almost surely, 2^1429701780 is an apocalyptic number.

1429701780 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 1429701780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2159644032).

1429701780 is an abundant number, since it is smaller than the sum of its proper divisors (2889586284).

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

1429701780 is a wasteful number, since it uses less digits than its factorization.

1429701780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3505 (or 3503 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 1429701780 is about 37811.3974880591. The cubic root of 1429701780 is about 1126.5448485092.

The spelling of 1429701780 in words is "one billion, four hundred twenty-nine million, seven hundred one thousand, seven hundred eighty".