15071940 has 192 divisors, whose sum is σ = 53625600. Its totient is φ = 3483648.

The previous prime is 15071939. The next prime is 15071971. The reversal of 15071940 is 4917051.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 133324 + ... + 133436.

It is an arithmetic number, because the mean of its divisors is an integer number (279300).

Almost surely, 2^15071940 is an apocalyptic number.

15071940 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 15071940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26812800).

15071940 is an abundant number, since it is smaller than the sum of its proper divisors (38553660).

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

15071940 is a wasteful number, since it uses less digits than its factorization.

15071940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 15071940 is about 3882.2596512856. The cubic root of 15071940 is about 247.0148439122.

Adding to 15071940 its reverse (4917051), we get a palindrome (19988991).

The spelling of 15071940 in words is "fifteen million, seventy-one thousand, nine hundred forty".