1398237480 has 96 divisors (see below), whose sum is σ = 4586868000. Its totient is φ = 369368448.

The previous prime is 1398237461. The next prime is 1398237487. The reversal of 1398237480 is 847328931.

1398237480 is a `hidden beast` number, since 139 + 8 + 2 + 37 + 480 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1398237487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20371 + ... + 56669.

It is an arithmetic number, because the mean of its divisors is an integer number (47779875).

Almost surely, 2^1398237480 is an apocalyptic number.

1398237480 is a gapful number since it is divisible by the number (10) 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 1398237480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2293434000).

1398237480 is an abundant number, since it is smaller than the sum of its proper divisors (3188630520).

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

1398237480 is a wasteful number, since it uses less digits than its factorization.

1398237480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36423 (or 36416 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1398237480 is about 37393.0137860002. The cubic root of 1398237480 is about 1118.2192897868.

The spelling of 1398237480 in words is "one billion, three hundred ninety-eight million, two hundred thirty-seven thousand, four hundred eighty".