2758398478 has 32 divisors (see below), whose sum is σ = 4821625440. Its totient is φ = 1169602560.

The previous prime is 2758398457. The next prime is 2758398491. The reversal of 2758398478 is 8748938572.

It is a super-3 number, since 3×2758398478³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

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, 9628 + ... + 74896.

It is an arithmetic number, because the mean of its divisors is an integer number (150675795).

Almost surely, 2^2758398478 is an apocalyptic number.

2758398478 is a deficient number, since it is larger than the sum of its proper divisors (2063226962).

2758398478 is a wasteful number, since it uses less digits than its factorization.

2758398478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65412.

The product of its digits is 27095040, while the sum is 61.

The square root of 2758398478 is about 52520.4577093536. The cubic root of 2758398478 is about 1402.4444501666. Note that the first 4 decimals are identical.

The spelling of 2758398478 in words is "two billion, seven hundred fifty-eight million, three hundred ninety-eight thousand, four hundred seventy-eight".