1396634624 has 88 divisors (see below), whose sum is σ = 3481013568. Its totient is φ = 544112640.

The previous prime is 1396634587. The next prime is 1396634639. The reversal of 1396634624 is 4264366931.

It is a tau number, because it is divible by the number of its divisors (88).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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, 69992 + ... + 87704.

Almost surely, 2^1396634624 is an apocalyptic number.

1396634624 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1396634624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1740506784).

1396634624 is an abundant number, since it is smaller than the sum of its proper divisors (2084378944).

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

1396634624 is a wasteful number, since it uses less digits than its factorization.

1396634624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17751 (or 17733 counting only the distinct ones).

The product of its digits is 559872, while the sum is 44.

The square root of 1396634624 is about 37371.5750805341. The cubic root of 1396634624 is about 1117.7918397913.

The spelling of 1396634624 in words is "one billion, three hundred ninety-six million, six hundred thirty-four thousand, six hundred twenty-four".