1523228990 has 32 divisors (see below), whose sum is σ = 2808612576. Its totient is φ = 594478080.

The previous prime is 1523228933. The next prime is 1523229047. The reversal of 1523228990 is 998223251.

It is an interprime number because it is at equal distance from previous prime (1523228933) and next prime (1523229047).

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 666650 + ... + 668930.

It is an arithmetic number, because the mean of its divisors is an integer number (87769143).

Almost surely, 2^1523228990 is an apocalyptic number.

1523228990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1523228990 is a deficient number, since it is larger than the sum of its proper divisors (1285383586).

1523228990 is a wasteful number, since it uses less digits than its factorization.

1523228990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3884.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1523228990 is about 39028.5663328798. The cubic root of 1523228990 is about 1150.5930123634.

The spelling of 1523228990 in words is "one billion, five hundred twenty-three million, two hundred twenty-eight thousand, nine hundred ninety".