15649480 has 64 divisors (see below), whose sum is σ = 43908480. Its totient is φ = 4876800.

The previous prime is 15649477. The next prime is 15649519. The reversal of 15649480 is 8494651.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 540 + ... + 5620.

It is an arithmetic number, because the mean of its divisors is an integer number (686070).

Almost surely, 2^15649480 is an apocalyptic number.

15649480 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 15649480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21954240).

15649480 is an abundant number, since it is smaller than the sum of its proper divisors (28259000).

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

15649480 is a wasteful number, since it uses less digits than its factorization.

15649480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110 (or 5106 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 15649480 is about 3955.9423656065. The cubic root of 15649480 is about 250.1304918756.

It can be divided in two parts, 15649 and 480, that added together give a square (16129 = 127²).

The spelling of 15649480 in words is "fifteen million, six hundred forty-nine thousand, four hundred eighty".