1453890 has 16 divisors (see below), whose sum is σ = 3489408. Its totient is φ = 387696.

The previous prime is 1453889. The next prime is 1453897. The reversal of 1453890 is 983541.

It is a super-2 number, since 2×1453890² = 4227592264200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 48463 = 1453890 / (1 + 4 + 5 + 3 + 8 + 9 + 0).

It is not an unprimeable number, because it can be changed into a prime (1453897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24202 + ... + 24261.

It is an arithmetic number, because the mean of its divisors is an integer number (218088).

2^1453890 is an apocalyptic number.

1453890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1453890 is an abundant number, since it is smaller than the sum of its proper divisors (2035518).

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

1453890 is a wasteful number, since it uses less digits than its factorization.

1453890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48473.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1453890 is about 1205.7736105920. The cubic root of 1453890 is about 113.2862453366.

The spelling of 1453890 in words is "one million, four hundred fifty-three thousand, eight hundred ninety".