1228505734 has 8 divisors (see below), whose sum is σ = 1859980968. Its totient is φ = 608512080.

The previous prime is 1228505717. The next prime is 1228505737. The reversal of 1228505734 is 4375058221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1228505693 and 1228505702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228505737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2870127 + ... + 2870554.

It is an arithmetic number, because the mean of its divisors is an integer number (232497621).

Almost surely, 2^1228505734 is an apocalyptic number.

1228505734 is a deficient number, since it is larger than the sum of its proper divisors (631475234).

1228505734 is a wasteful number, since it uses less digits than its factorization.

1228505734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5740790.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 1228505734 is about 35050.0461340638. The cubic root of 1228505734 is about 1071.0072135849.

The spelling of 1228505734 in words is "one billion, two hundred twenty-eight million, five hundred five thousand, seven hundred thirty-four".