15450090 has 64 divisors (see below), whose sum is σ = 39398400. Its totient is φ = 3870720.

The previous prime is 15450079. The next prime is 15450091. The reversal of 15450090 is 9005451.

It is a self number, because there is not a number n which added to its sum of digits gives 15450090.

It is not an unprimeable number, because it can be changed into a prime (15450091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34186 + ... + 34634.

It is an arithmetic number, because the mean of its divisors is an integer number (615600).

Almost surely, 2^15450090 is an apocalyptic number.

15450090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 15450090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19699200).

15450090 is an abundant number, since it is smaller than the sum of its proper divisors (23948310).

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

15450090 is a wasteful number, since it uses less digits than its factorization.

15450090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 15450090 is about 3930.6602498817. The cubic root of 15450090 is about 249.0636439949.

The spelling of 15450090 in words is "fifteen million, four hundred fifty thousand, ninety".