1429778480 has 40 divisors (see below), whose sum is σ = 3579947952. Its totient is φ = 527917824.

The previous prime is 1429778479. The next prime is 1429778507. The reversal of 1429778480 is 848779241.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1429778480² = 4088533003742220800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686354 + ... + 688433.

Almost surely, 2^1429778480 is an apocalyptic number.

1429778480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1429778480 is an abundant number, since it is smaller than the sum of its proper divisors (2150169472).

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

1429778480 is a wasteful number, since it uses less digits than its factorization.

1429778480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374813 (or 1374807 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 50.

The square root of 1429778480 is about 37812.4117189052. The cubic root of 1429778480 is about 1126.5649936066.

The spelling of 1429778480 in words is "one billion, four hundred twenty-nine million, seven hundred seventy-eight thousand, four hundred eighty".