15432012 has 48 divisors (see below), whose sum is σ = 40951680. Its totient is φ = 5022864.

The previous prime is 15432007. The next prime is 15432023. The reversal of 15432012 is 21023451.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2983 + ... + 6305.

It is an arithmetic number, because the mean of its divisors is an integer number (853160).

Almost surely, 2^15432012 is an apocalyptic number.

15432012 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 15432012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20475840).

15432012 is an abundant number, since it is smaller than the sum of its proper divisors (25519668).

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

15432012 is a wasteful number, since it uses less digits than its factorization.

15432012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379 (or 3371 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 15432012 is about 3928.3599631398. The cubic root of 15432012 is about 248.9664637662.

Adding to 15432012 its reverse (21023451), we get a palindrome (36455463).

The spelling of 15432012 in words is "fifteen million, four hundred thirty-two thousand, twelve".