1246987980 has 96 divisors (see below), whose sum is σ = 4433748480. Its totient is φ = 285024960.

The previous prime is 1246987969. The next prime is 1246987991. The reversal of 1246987980 is 897896421.

1246987980 is a `hidden beast` number, since 12 + 469 + 87 + 98 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1246987969) and next prime (1246987991).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 161166 + ... + 168725.

It is an arithmetic number, because the mean of its divisors is an integer number (46184880).

Almost surely, 2^1246987980 is an apocalyptic number.

1246987980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1246987980 is an abundant number, since it is smaller than the sum of its proper divisors (3186760500).

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

1246987980 is a wasteful number, since it uses less digits than its factorization.

1246987980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329916 (or 329908 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 1246987980 is about 35312.7169727847. The cubic root of 1246987980 is about 1076.3514224127.

The spelling of 1246987980 in words is "one billion, two hundred forty-six million, nine hundred eighty-seven thousand, nine hundred eighty".