1398060432 has 160 divisors (see below), whose sum is σ = 4285440000. Its totient is φ = 435093120.

The previous prime is 1398060431. The next prime is 1398060437. The reversal of 1398060432 is 2340608931.

1398060432 is a `hidden beast` number, since 13 + 9 + 8 + 0 + 604 + 32 = 666.

It is a super-3 number, since 3×1398060432³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1398060431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 581569 + ... + 583967.

It is an arithmetic number, because the mean of its divisors is an integer number (26784000).

Almost surely, 2^1398060432 is an apocalyptic number.

1398060432 is a gapful number since it is divisible by the number (12) 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 1398060432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2142720000).

1398060432 is an abundant number, since it is smaller than the sum of its proper divisors (2887379568).

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

1398060432 is a wasteful number, since it uses less digits than its factorization.

1398060432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506 (or 2494 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 1398060432 is about 37390.6463169601. The cubic root of 1398060432 is about 1118.1720906406.

The spelling of 1398060432 in words is "one billion, three hundred ninety-eight million, sixty thousand, four hundred thirty-two".