2921902 has 4 divisors (see below), whose sum is σ = 4382856. Its totient is φ = 1460950.

The previous prime is 2921899. The next prime is 2921903. The reversal of 2921902 is 2091292.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×2921902² = 17075022595208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2921903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730474 + ... + 730477.

It is an arithmetic number, because the mean of its divisors is an integer number (1095714).

2^2921902 is an apocalyptic number.

2921902 is a deficient number, since it is larger than the sum of its proper divisors (1460954).

2921902 is a wasteful number, since it uses less digits than its factorization.

2921902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460953.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 2921902 is about 1709.3571891211. The cubic root of 2921902 is about 142.9624169739.

The spelling of 2921902 in words is "two million, nine hundred twenty-one thousand, nine hundred two".