1478697252 has 24 divisors (see below), whose sum is σ = 3483794496. Its totient is φ = 488113248.

The previous prime is 1478697239. The next prime is 1478697263. The reversal of 1478697252 is 2527968741.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1478697195 and 1478697204.

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, 596943 + ... + 599414.

It is an arithmetic number, because the mean of its divisors is an integer number (145158104).

Almost surely, 2^1478697252 is an apocalyptic number.

1478697252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1478697252 is an abundant number, since it is smaller than the sum of its proper divisors (2005097244).

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

1478697252 is a wasteful number, since it uses less digits than its factorization.

1478697252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196467 (or 1196465 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The square root of 1478697252 is about 38453.8327348523. The cubic root of 1478697252 is about 1139.2693717898.

The spelling of 1478697252 in words is "one billion, four hundred seventy-eight million, six hundred ninety-seven thousand, two hundred fifty-two".