1405688252 has 6 divisors (see below), whose sum is σ = 2459954448. Its totient is φ = 702844124.

The previous prime is 1405688243. The next prime is 1405688269. The reversal of 1405688252 is 2528865041.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175711028 + ... + 175711035.

It is an arithmetic number, because the mean of its divisors is an integer number (409992408).

Almost surely, 2^1405688252 is an apocalyptic number.

It is an amenable number.

1405688252 is a deficient number, since it is larger than the sum of its proper divisors (1054266196).

1405688252 is a wasteful number, since it uses less digits than its factorization.

1405688252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351422067 (or 351422065 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 1405688252 is about 37492.5092785212. The cubic root of 1405688252 is about 1120.2019863172.

The spelling of 1405688252 in words is "one billion, four hundred five million, six hundred eighty-eight thousand, two hundred fifty-two".