2021390470 has 16 divisors (see below), whose sum is σ = 3969276048. Its totient is φ = 735051040.

The previous prime is 2021390447. The next prime is 2021390533. The reversal of 2021390470 is 740931202.

It is a congruent number.

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, 9188029 + ... + 9188248.

It is an arithmetic number, because the mean of its divisors is an integer number (248079753).

Almost surely, 2^2021390470 is an apocalyptic number.

2021390470 is a deficient number, since it is larger than the sum of its proper divisors (1947885578).

2021390470 is a wasteful number, since it uses less digits than its factorization.

2021390470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18376295.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 2021390470 is about 44959.8762231392. The cubic root of 2021390470 is about 1264.3968482825.

The spelling of 2021390470 in words is "two billion, twenty-one million, three hundred ninety thousand, four hundred seventy".