3420390 has 16 divisors (see below), whose sum is σ = 8209008. Its totient is φ = 912096.

The previous prime is 3420371. The next prime is 3420401. The reversal of 3420390 is 930243.

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, 56977 + ... + 57036.

It is an arithmetic number, because the mean of its divisors is an integer number (513063).

Almost surely, 2^3420390 is an apocalyptic number.

3420390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3420390 is an abundant number, since it is smaller than the sum of its proper divisors (4788618).

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

3420390 is a wasteful number, since it uses less digits than its factorization.

3420390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114023.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 3420390 is about 1849.4296418085. The cubic root of 3420390 is about 150.6694522244.

The spelling of 3420390 in words is "three million, four hundred twenty thousand, three hundred ninety".