15450490 has 36 divisors (see below), whose sum is σ = 30841902. Its totient is φ = 5568640.

The previous prime is 15450473. The next prime is 15450499. The reversal of 15450490 is 9405451.

It can be written as a sum of positive squares in 3 ways, for example, as 2982529 + 12467961 = 1727^2 + 3531^2 .

It is a super-4 number, since 4×15450490⁴ (a number of 30 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (15450499) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 136674 + ... + 136786.

Almost surely, 2^15450490 is an apocalyptic number.

15450490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15450490 is a deficient number, since it is larger than the sum of its proper divisors (15391412).

15450490 is a wasteful number, since it uses less digits than its factorization.

15450490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 15450490 is about 3930.7111315893. The cubic root of 15450490 is about 249.0657933803.

The spelling of 15450490 in words is "fifteen million, four hundred fifty thousand, four hundred ninety".