1217514540 has 96 divisors (see below), whose sum is σ = 3847253760. Its totient is φ = 284972800.

The previous prime is 1217514527. The next prime is 1217514559. The reversal of 1217514540 is 454157121.

It is a super-2 number, since 2×1217514540² = 2964683310222823200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1217514498 and 1217514507.

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, 12666 + ... + 50945.

It is an arithmetic number, because the mean of its divisors is an integer number (40075560).

Almost surely, 2^1217514540 is an apocalyptic number.

1217514540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1217514540 is an abundant number, since it is smaller than the sum of its proper divisors (2629739220).

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

1217514540 is a wasteful number, since it uses less digits than its factorization.

1217514540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63663 (or 63661 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 1217514540 is about 34892.9009971943. The cubic root of 1217514540 is about 1067.8036117174.

The spelling of 1217514540 in words is "one billion, two hundred seventeen million, five hundred fourteen thousand, five hundred forty".