1298884140 has 48 divisors (see below), whose sum is σ = 4040974560. Its totient is φ = 346368960.

The previous prime is 1298884121. The next prime is 1298884183. The reversal of 1298884140 is 414888921.

It is a super-3 number, since 3×1298884140³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 1202131 + ... + 1203210.

It is an arithmetic number, because the mean of its divisors is an integer number (84186970).

Almost surely, 2^1298884140 is an apocalyptic number.

1298884140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1298884140 is an abundant number, since it is smaller than the sum of its proper divisors (2742090420).

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

1298884140 is a wasteful number, since it uses less digits than its factorization.

1298884140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405359 (or 2405351 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 1298884140 is about 36040.0352386065. The cubic root of 1298884140 is about 1091.0805265803.

The spelling of 1298884140 in words is "one billion, two hundred ninety-eight million, eight hundred eighty-four thousand, one hundred forty".