1217475490 has 64 divisors (see below), whose sum is σ = 2737566720. Its totient is φ = 378728640.

The previous prime is 1217475461. The next prime is 1217475517. The reversal of 1217475490 is 945747121.

It is a super-3 number, since 3×1217475490³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 493881 + ... + 496339.

It is an arithmetic number, because the mean of its divisors is an integer number (42774480).

Almost surely, 2^1217475490 is an apocalyptic number.

1217475490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1217475490 is an abundant number, since it is smaller than the sum of its proper divisors (1520091230).

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

1217475490 is a wasteful number, since it uses less digits than its factorization.

1217475490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 1217475490 is about 34892.3414232980. The cubic root of 1217475490 is about 1067.7921955151.

The spelling of 1217475490 in words is "one billion, two hundred seventeen million, four hundred seventy-five thousand, four hundred ninety".