1247898 has 16 divisors (see below), whose sum is σ = 2509056. Its totient is φ = 413760.

The previous prime is 1247893. The next prime is 1247923. The reversal of 1247898 is 8987421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015 + ... + 1877.

It is an arithmetic number, because the mean of its divisors is an integer number (156816).

2^1247898 is an apocalyptic number.

1247898 is an abundant number, since it is smaller than the sum of its proper divisors (1261158).

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

1247898 is a wasteful number, since it uses less digits than its factorization.

1247898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109.

The product of its digits is 32256, while the sum is 39.

The square root of 1247898 is about 1117.0935502455. The cubic root of 1247898 is about 107.6613190011.

It can be divided in two parts, 1247 and 898, that added together give a triangular number (2145 = T₆₅).

The spelling of 1247898 in words is "one million, two hundred forty-seven thousand, eight hundred ninety-eight".