7149870 has 160 divisors (see below), whose sum is σ = 23905728. Its totient is φ = 1492992.

The previous prime is 7149851. The next prime is 7149899. The reversal of 7149870 is 789417.

It is a super-2 number, since 2×7149870² = 102241282033800, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 73662 + ... + 73758.

Almost surely, 2^7149870 is an apocalyptic number.

7149870 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7149870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11952864).

7149870 is an abundant number, since it is smaller than the sum of its proper divisors (16755858).

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

7149870 is a wasteful number, since it uses less digits than its factorization.

7149870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 7149870 is about 2673.9240826920. The cubic root of 7149870 is about 192.6486848131.

The spelling of 7149870 in words is "seven million, one hundred forty-nine thousand, eight hundred seventy".