15978348 has 36 divisors (see below), whose sum is σ = 40851720. Its totient is φ = 5265216.

The previous prime is 15978341. The next prime is 15978371. The reversal of 15978348 is 84387951.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (15978341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 711 + ... + 5697.

It is an arithmetic number, because the mean of its divisors is an integer number (1134770).

Almost surely, 2^15978348 is an apocalyptic number.

15978348 is a gapful number since it is divisible by the number (18) 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 15978348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20425860).

15978348 is an abundant number, since it is smaller than the sum of its proper divisors (24873372).

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

15978348 is a wasteful number, since it uses less digits than its factorization.

15978348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5086 (or 5081 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 15978348 is about 3997.2925837371. The cubic root of 15978348 is about 251.8704927902.

The spelling of 15978348 in words is "fifteen million, nine hundred seventy-eight thousand, three hundred forty-eight".