1210478340 has 24 divisors (see below), whose sum is σ = 3389339520. Its totient is φ = 322794208.

The previous prime is 1210478329. The next prime is 1210478393. The reversal of 1210478340 is 438740121.

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 = 1210478298 and 1210478307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10087260 + ... + 10087379.

It is an arithmetic number, because the mean of its divisors is an integer number (141222480).

Almost surely, 2^1210478340 is an apocalyptic number.

1210478340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210478340 is an abundant number, since it is smaller than the sum of its proper divisors (2178861180).

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

1210478340 is a wasteful number, since it uses less digits than its factorization.

1210478340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20174651 (or 20174649 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 1210478340 is about 34791.9292365342. The cubic root of 1210478340 is about 1065.7426370478.

The spelling of 1210478340 in words is "one billion, two hundred ten million, four hundred seventy-eight thousand, three hundred forty".